diff --git a/.gulp/common.iced b/.gulp/common.iced
index 0ae10c3876..0fb93acc0c 100644
--- a/.gulp/common.iced
+++ b/.gulp/common.iced
@@ -1,10 +1,103 @@
+# place an object into global namespace 
+global['Import'] = (object) -> 
+  for key, value of object
+    global[key] = value 
+
+Import
+  # require into the global namespace (modulename = module)
+  Install: (modulename, module) -> 
+    global[modulename] = require module or modulename 
+
+  # require a gulp-Plugin into the global namespace 
+  Plugin: () ->
+    Install module,"gulp-#{module}" for module in arguments
+
+  # require a module, placing exports into global namespace
+  Include: () -> 
+    Import require module  for module in arguments
+
+  Tasks: () -> 
+    require "#{__dirname}/#{module}" for module in arguments
+
+###############################################
+# force-global a bunch of stuff.
+require 'shelljs/global'
 fs = require('fs')
 path = require('path')
+TerminalRenderer = require('marked-terminal')
+vfs = require('vinyl-fs');
+
+Install 'marked'
+Install 'vinyl'
+Install 'os'
+Install 'path'
+Install 'fs'
+Install 'gulp'
+Install 'util'
+Install 'moment'
+Install 'chalk'
+Install 'yargs'
+Install 'eol', 'gulp-line-ending-corrector'
+Install 'through', 'through2-parallel'
+Install 'run', 'run-sequence'
+Install 'semver'
+
+
+# force this into global namespace
+global['argv'] = yargs.argv
+global.verbose = argv.verbose or null
+
+###############################################
+# UI stuff
+
+marked.setOptions {
+  renderer: new TerminalRenderer({
+    heading: chalk.green.bold,
+    firstHeading: chalk.green.bold,
+    showSectionPrefix: false,
+    strong: chalk.bold.cyan,
+    em: chalk.cyan,
+    blockquote: chalk.magenta,
+    tab: 2
+  })
+}
+
+set '+e'
+
+Import 
+  force: argv.force or false
+  threshold: argv.threshold or ((os.cpus().length)-1) or 1
+  watch: argv.watch or false
+  error: chalk.bold.red
+  error_message: chalk.bold.cyan
+  warning: chalk.bold.yellow
+  info: chalk.bold.green
+  quiet_info: chalk.green
+
+# do a bit of monkeypatching
+_gulpStart = gulp.Gulp::start
+_runTask = gulp.Gulp::_runTask
+
+gulp.Gulp::start = (taskName) ->
+  @currentStartTaskName = taskName
+  _gulpStart.apply this, arguments
+  return
+
+gulp.Gulp::_runTask = (task) ->
+  @currentRunTaskName = task.name
+  _runTask.apply this, arguments
+  return
+
+#  echo 'this.currentStartTaskName: ' + this.currentStartTaskName
+#  echo 'this.currentRunTaskName: ' + this.currentRunTaskName
+
+# bring some gulp-Plugins along
+Plugin 'filter'
+
 
 concurrency = 0 
 queue = []
 global.completed = []
-vfs = require('vinyl-fs');
 
 module.exports =
   # lets us just handle each item in a stream easily.
@@ -226,7 +319,6 @@ module.exports =
     echo ""
     echo "#{ error 'Task Failed:' }  #{error_message text}"
     echo ""
-    rm '-rf', workdir
     process.exit(1)
 
   execute: (cmdline,options,callback, ondata)->
@@ -278,14 +370,63 @@ module.exports =
     proc.stdout.on 'data', ondata if ondata
     return proc
 
+for key, value of module.exports
+  global[key] = value 
 
 # build task for global build
-module.exports.task 'build', 'builds project', -> 
+task 'build', 'builds project', -> 
   echo "Building project in #{basefolder}"
 
-module.exports.task 'clean', 'cleans the project files', -> 
+task 'clean', 'cleans the project files', -> 
 
 # task for vs code
-module.exports.task 'code', 'launches vs code', -> 
+task 'code', 'launches vs code', -> 
   exec "code #{basefolder}"
- 
\ No newline at end of file
+
+configString = (s)->
+  "#{s.charAt 0 .toUpperCase()}#{s.slice 1 .toLowerCase() }"
+
+
+
+###############################################
+task 'default','', ->
+  cmds = ""
+
+  for name, t of gulp.tasks 
+    cmds += "\n  gulp **#{name}** - #{t.description}" if t.description? and t.description.length
+  switches = ""
+
+  echo marked  """
+
+# Usage
+
+## gulp commands  
+#{cmds}
+
+## available switches  
+  *--force*          specify when you want to force an action (restore, etc)
+  *--verbose*        enable verbose output
+  *--threshold=nn*   set parallelism threshold (default = 10)
+
+#{switches}
+"""
+
+task 'test', "Run Tests", ->
+  
+task 'fix-line-endings', 'Fixes line endings to file-type appropriate values.', ->
+  source "**/*.iced"
+    .pipe eol {eolc: 'LF', encoding:'utf8'}
+    .pipe destination '.'
+
+package_json = require("#{basefolder}/package.json")
+
+task 'version-number', '!', (done)->
+  if argv.version
+    global.version =  argv.version if argv.version
+    done();
+  else 
+    # git rev-list --parents HEAD --count --full-history
+    execute "git rev-list --parents HEAD --count --full-history" , {silent:true}, (c,o,e)->
+      pv = (package_json.version).trim()
+      global.version = "#{semver.major(pv)}.#{semver.minor(pv)}.#{o.trim()}"
+      done();
diff --git a/.gulp/except.iced b/.gulp/except.iced
deleted file mode 100644
index 5d896b52ad..0000000000
--- a/.gulp/except.iced
+++ /dev/null
@@ -1,17 +0,0 @@
-through = require 'through2'
-util = require 'util'
-
-module.exports = (match) ->
-  # await through.obj  defer file, enc, callback
-   through.obj (file, enc, callback) ->
-
-    # check if the file is an actual file. 
-    # if it's not, just skip this tool.
-    if !file or !file.path
-      return callback null, file
-    
-    # do something with the file
-    if file.path.match( match ) 
-        return callback null
-    
-    return callback null, file
\ No newline at end of file
diff --git a/.gulp/gulp.iced b/.gulp/gulp.iced
deleted file mode 100644
index 28dd50b052..0000000000
--- a/.gulp/gulp.iced
+++ /dev/null
@@ -1,169 +0,0 @@
-# place an object into global namespace 
-global['Import'] = (object) -> 
-  for key, value of object
-    global[key] = value 
-
-Import
-  # require into the global namespace (modulename = module)
-  Install: (modulename, module) -> 
-    global[modulename] = require module or modulename 
-
-  # require a gulp-Plugin into the global namespace 
-  Plugin: () ->
-    Install module,"gulp-#{module}" for module in arguments
-
-  # require a module, placing exports into global namespace
-  Include: () -> 
-    Import require module  for module in arguments
-
-  Tasks: () -> 
-    require "#{__dirname}/#{module}" for module in arguments
-
-###############################################
-# force-global a bunch of stuff.
-require 'shelljs/global'
-Install 'marked'
-Install 'vinyl'
-Install 'os'
-Install 'path'
-Install 'fs'
-Install 'gulp'
-Install 'util'
-Install 'moment'
-Install 'chalk'
-Install 'yargs'
-Install 'ghrelease', 'gulp-github-release'
-Install 'eol', 'gulp-line-ending-corrector'
-Install 'through', 'through2-parallel'
-Install 'run', 'run-sequence'
-
-# do a bit of monkeypatching
-_gulpStart = gulp.Gulp::start
-_runTask = gulp.Gulp::_runTask
-
-gulp.Gulp::start = (taskName) ->
-  @currentStartTaskName = taskName
-  _gulpStart.apply this, arguments
-  return
-
-gulp.Gulp::_runTask = (task) ->
-  @currentRunTaskName = task.name
-  _runTask.apply this, arguments
-  return
-
-#  echo 'this.currentStartTaskName: ' + this.currentStartTaskName
-#  echo 'this.currentRunTaskName: ' + this.currentRunTaskName
-
-# bring some gulp-Plugins along
-Plugin 'filter',
-  'zip'
-  'unzip'
-  'rename'
-
-# force this into global namespace
-global['argv'] = yargs.argv
-
-Include './common'
-
-configString = (s)->
-  "#{s.charAt 0 .toUpperCase()}#{s.slice 1 .toLowerCase() }"
-
-
-###############################################
-# Global values
-process.env.tmp = process.env.tmp or "#{basefolder}/tmp"
-
-
-Import 
-  versionsuffix: if argv["version-suffix"]? then "--version-suffix=#{argv["version-suffix"]}" else ""
-  version: argv.version or (cat "#{basefolder}/VERSION").trim()
-  github_apikey: argv.github_apikey or process.env.GITHUB_APIKEY or null
-  nuget_apikey: argv.nuget_apikey or process.env.NUGET_APIKEY or null
-  myget_apikey: argv.myget_apikey or process.env.MYGET_APIKEY or null
-  npm_apikey:  argv.npm_apikey or process.env.NPM_APIKEY or null
-  github_feed: argv.feed or "azure"
-  today: moment().format('YYYYMMDD')
-  now: moment().format('YYYYMMDD-HHmm')
-  force: argv.force or false
-  threshold: argv.threshold or ((os.cpus().length)-1) or 1
-  workdir: "#{process.env.tmp}/gulp/#{guid()}"
-  watch: argv.watch or false
-global.verbose = argv.verbose or null
-
-mkdir "-p", workdir if !test "-d", workdir
-
-###############################################
-# UI stuff
-TerminalRenderer = require('marked-terminal')
-marked.setOptions {
-  renderer: new TerminalRenderer({
-    heading: chalk.green.bold,
-    firstHeading: chalk.green.bold,
-    showSectionPrefix: false,
-    strong: chalk.bold.cyan,
-    em: chalk.cyan,
-    blockquote: chalk.magenta,
-    tab: 2
-  })
-}
-
-set '+e'
-
-Import 
-  error: chalk.bold.red
-  error_message: chalk.bold.cyan
-  warning: chalk.bold.yellow
-  info: chalk.bold.green
-  quiet_info: chalk.green
-
-###############################################
-task 'default','', ->
-  cmds = ""
-
-  for name, t of gulp.tasks 
-    cmds += "\n  gulp **#{name}** - #{t.description}" if t.description? and t.description.length
-  switches = ""
-
-  echo marked  """
-
-# Usage
-
-## gulp commands  
-#{cmds}
-
-## available switches  
-  *--force*          specify when you want to force an action (restore, etc)
-  *--nightly*        generate label for package as 'YYYYMMDD-0000-nightly'
-  *--preview*        generate label for package as 'YYYYMMDD-HHmm-preview'
-  *--verbose*        enable verbose output
-  *--threshold=nn*   set parallelism threshold (default = 10)
-
-#{switches}
-"""
-
-task 'test', "Run Tests", ->
-  
-
-task 'fix-line-endings', 'Fixes line endings to file-type appropriate values.', ->
-  source "**/*.iced"
-    .pipe eol {eolc: 'LF', encoding:'utf8'}
-    .pipe destination '.'
-
-# CI job
-task 'testci', "more", [], (done) ->
-  ## TEST SUITE
-  global.verbose = true
-  await run "test", defer _
-
-  ## REGRESSION TEST
-  global.verbose = false
-  # regenerate
-  await run "regenerate", defer _
-  # diff ('add' first so 'diff' includes untracked files)
-  await  execute "git add -A", defer code, stderr, stdout
-  await  execute "git diff --staged -w", defer code, stderr, stdout
-  # eval
-  echo stderr
-  echo stdout
-  throw "Potentially unnoticed regression (see diff above)! Run `npm run regenerate`, then review and commit the changes." if stdout.length + stderr.length > 0
-  done()
diff --git a/gulpfile.iced b/.gulp/gulpfile.iced
similarity index 88%
rename from gulpfile.iced
rename to .gulp/gulpfile.iced
index 139acbd8bf..c747ea00c1 100644
--- a/gulpfile.iced
+++ b/.gulp/gulpfile.iced
@@ -1,21 +1,17 @@
-# set the base folder of this project
-global.basefolder = "#{__dirname}"
 
 # use our tweaked version of gulp with iced coffee.
-require './.gulp/gulp.iced'
+require './common.iced'
 semver = require 'semver'
 
 # tasks required for this build 
 Tasks "typescript",  # compiling typescript
   "regeneration" # regenerating expected files
-  "publishing"   # signing/publishing binaries to github and npm registry
+  "publishing"   # publishing binaries to npm registry
 
 # Settings
 Import
   initialized: false
   packages: "#{basefolder}/packages"
-  release_name: if argv.nightly then "#{version}-#{today}-2300-nightly"              else if argv.preview then "#{version}-#{now}-preview"              else "#{version}"
-  package_name: if argv.nightly then "autorest-#{version}-#{today}-2300-nightly.zip" else if argv.preview then "autorest-#{version}-#{now}-preview.zip" else "autorest-#{version}.zip"
   autorest: (args,done,ignoreexitcode) ->
     # Run AutoRest from the original current directory.
     echo info "Queuing up: AutoRest #{args.join(' ')}"
@@ -142,3 +138,24 @@ task 'init', "" ,(done)->
 
     return null
   return null
+
+
+# CI job
+task 'testci', "more", [], (done) ->
+  ## TEST SUITE
+  global.verbose = true
+  await run "test", defer _
+
+  ## REGRESSION TEST
+  global.verbose = false
+  # regenerate
+  await run "regenerate", defer _
+  # diff ('add' first so 'diff' includes untracked files)
+  await  execute "git add -A", defer code, stderr, stdout
+  await  execute "git diff --staged -w", defer code, stderr, stdout
+  # eval
+  echo stderr
+  echo stdout
+  throw "Potentially unnoticed regression (see diff above)! Run `npm run regenerate`, then review and commit the changes." if stdout.length + stderr.length > 0
+  done()
+
diff --git a/.gulp/publishing.iced b/.gulp/publishing.iced
index 4ea2993a23..e7fdadc7c5 100644
--- a/.gulp/publishing.iced
+++ b/.gulp/publishing.iced
@@ -1,5 +1,33 @@
-task 'publish/autorest' , '' , ['build/typescript'], (done) ->
-  execute "npm publish ", {cwd: "#{basefolder}/src/autorest" }, done
+task 'publish-preview' , 'Publishes the the packages to NPM.',['version-number'],  (done)->
+  publish_core = false
+  publish_bootstrapper = false
 
-task 'publish/autorest-core', '', ['build/typescript'], (done) ->
-  execute "npm publish ", {cwd: "#{basefolder}/src/autorest-core" }, done
+  execute 'git show --pretty="" --name-only "HEAD^1"',{silent:true}, (c,o,e)->
+    publish_core = true if( o.indexOf("src/") >-1 ) 
+    publish_bootstrapper = true if( o.indexOf("src/autorest/") >-1 ) 
+
+    return done() if !publish_core # neither need publishing
+
+    # update core package.json
+    package_path = "#{basefolder}/src/autorest-core/package.json"
+    package_folder = "#{basefolder}/src/autorest-core"
+    package_json = require package_path
+    package_json.version = version
+    JSON.stringify(package_json,null,'  ').to package_path 
+
+    # publish core package
+    execute "npm publish --tag preview",{cwd:package_folder, silent:false }, (c,o,e) -> 
+      echo  "\n\nPublished Core:  #{package_json.name}@#{info package_json.version} (tagged as @preview)\n\n"
+
+      return done() if !publish_bootstrapper # doesn't need new bootstrapper
+
+      # update bootstrapepr package.json
+      package_path = "#{basefolder}/src/autorest/package.json"
+      package_folder = "#{basefolder}/src/autorest"
+      package_json = require package_path
+      package_json.version = version
+      JSON.stringify(package_json,null,'  ').to package_path 
+
+      execute "npm publish --tag preview",{cwd:package_folder, silent:false }, (c,o,e) -> 
+        echo  "\n\nPublished Bootstrapper:  #{package_json.name}@#{info package_json.version} (tagged as @preview)\n\n"
+        done()
\ No newline at end of file
diff --git a/gulpfile.js b/gulpfile.js
new file mode 100644
index 0000000000..f231d0173d
--- /dev/null
+++ b/gulpfile.js
@@ -0,0 +1,4 @@
+// set the base folder of this project
+global.basefolder = `${__dirname}`
+require ("rechoir").prepare(require('interpret').extensions, './.gulp/gulpfile.iced');
+require ('./.gulp/gulpfile.iced')
diff --git a/package.json b/package.json
index 5db20d684d..3235b0f05e 100644
--- a/package.json
+++ b/package.json
@@ -1,11 +1,12 @@
 {
   "name": "autorest-build",
-  "version": "1.0.0",
+  "version": "2.0.0",
   "description": "Tools for AutoRest build processes",
   "scripts": {
     "test": "gulp test",
     "testci": "gulp testci",
     "build": "gulp build --threshold=1",
+    "publish-preview": "gulp publish-preview",
     "install": "gulp npm-install --verbose"
   },
   "repository": {
@@ -69,4 +70,4 @@
     "yauzl": "^2.7.0"
   },
   "dependencies": {}
-}
+}
\ No newline at end of file
diff --git a/package/nuget/package.json b/package/nuget/package.json
index d034093167..e8c1793d31 100644
--- a/package/nuget/package.json
+++ b/package/nuget/package.json
@@ -1,6 +1,6 @@
 {
   "name": "autorest-nuget",
-  "version": "1.2.1",
+  "version": "2.0.0",
   "description": "AutoRest Nuget Package",
   "main": "main.js",
   "scripts": {
@@ -9,6 +9,6 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "autorest": "^1.2.2"
+    "autorest": "^2.0.0"
   }
-}
+}
\ No newline at end of file
diff --git a/src/autorest-core/package.json b/src/autorest-core/package.json
index 2767024370..eb5abb6010 100644
--- a/src/autorest-core/package.json
+++ b/src/autorest-core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@microsoft.azure/autorest-core",
-  "version": "2.0.5",
+  "version": "2.0.0",
   "description": "AutoRest core module",
   "engines": {
     "node": ">=7.10.0"
@@ -21,7 +21,7 @@
   "main": "./dist/main.js",
   "scripts": {
     "test": "./node_modules/.bin/mocha ./dist/test",
-    "prepare": "shx rm -rf ./dist/ && shx mkdir -p ./dist/ && tsc && cd ./static_modules && npm install",
+    "prepare": "shx mkdir -p ./dist/ && cd ./static_modules && npm install",
     "prepublishonly": "gulp build"
   },
   "typings": "./dist/main.d.ts",
@@ -74,4 +74,4 @@
     "yargs": "^8.0.2"
   },
   "dependencies": {}
-}
+}
\ No newline at end of file
diff --git a/src/autorest-core/static_modules/package.json b/src/autorest-core/static_modules/package.json
index 2885f5fafe..ddc2d61777 100644
--- a/src/autorest-core/static_modules/package.json
+++ b/src/autorest-core/static_modules/package.json
@@ -1,6 +1,6 @@
 {
   "name": "static_modules",
-  "version": "1.0.0",
+  "version": "2.0.0",
   "description": "builds the static_modules file",
   "scripts": {
     "postinstall": "node ./create-static-fs"
@@ -17,6 +17,7 @@
     "linq-es2015": "^2.4.25",
     "pify": "^3.0.0",
     "safe-eval": "^0.3.0",
+    "semver-regex": "^1.0.0",
     "source-map": "^0.5.6",
     "strip-bom": "^3.0.0",
     "untildify": "^3.0.2",
@@ -29,4 +30,4 @@
     "type": "git",
     "url": "git+https://github.com/olydis/dotnet-2.0.0.git"
   }
-}
+}
\ No newline at end of file
diff --git a/src/autorest/package.json b/src/autorest/package.json
index e3b83a53f2..44c3248a2a 100644
--- a/src/autorest/package.json
+++ b/src/autorest/package.json
@@ -1,6 +1,6 @@
 {
   "name": "autorest",
-  "version": "2.0.5",
+  "version": "2.0.0",
   "description": "The AutoRest tool generates client libraries for accessing RESTful web services. Input to AutoRest is a spec that describes the REST API using the Open API Initiative format.",
   "engines": {
     "node": ">=7.10.0"
@@ -63,4 +63,4 @@
     "linq-es2015": "^2.4.24",
     "semver": "^5.3.0"
   }
-}
+}
\ No newline at end of file
diff --git a/src/autorest/static_modules/package.json b/src/autorest/static_modules/package.json
index a2989d8d36..0df5a5a5b6 100644
--- a/src/autorest/static_modules/package.json
+++ b/src/autorest/static_modules/package.json
@@ -1,6 +1,6 @@
 {
   "name": "static_modules",
-  "version": "1.0.0",
+  "version": "2.0.0",
   "description": "builds the static_modules file",
   "scripts": {
     "postinstall": "node ./create-static-fs"
@@ -19,4 +19,4 @@
     "type": "git",
     "url": "git+https://github.com/olydis/dotnet-2.0.0.git"
   }
-}
+}
\ No newline at end of file