继去年9月份IE9 Beta版发布之后，IE9 beta下载次数已经超过2300万，充分说明IE9受关注和期待的程度。 今天IE团队很高兴发布了IE9 RC版，欢迎大家下载试用。 距离IE9正式版发布的日子已经不远了...

IE9 RC版版本号： 9.0.8080.16413

IE9 RC for Windows7 32位下载:
http://download.microsoft.com/download/D/E/E/DEE0397B-C938-4C56-81E7-77B60915171D/IE9-Windows7-x86-chs.exe

IE9 RC for Windows7 64位下载:
http://download.microsoft.com/download/E/8/5/E8512A73-76E8-46C6-A9CF-0BE11A7E98F7/IE9-Windows7-x64-chs.exe

IE9 RC for Vista 32位下载:
http://download.microsoft.com/download/E/4/6/E466E757-4FC9-45D8-87CC-FAC249D3A834/IE9-WindowsVista-x86-chs.exe

IE9 RC for Vista 64位 下载:
http://download.microsoft.com/download/9/2/3/9239A2DC-8D0D-44E6-A0AB-1FBFF04F5411/IE9-WindowsVista-x64-chs.exe

装上IE9之后，大家不妨到IE9的官方网站 http://www.beautyoftheweb.com/  看看，上面有详细的介绍以及大量的开发示例，全面展示HTML5以及GPU硬件加速的Power。

相比beta版，RC版有以下更新：

Performance

Elapsed Time

  • Significant scenario tuning
  • Chakra performance optimizations
  • Network cache improvements (size, priorities, etc.)
  • Compiler optimizations and binary training

Large Working Set Reductions

  • Delayed p_w_picpath decoding (1-50MB depending on site)
  • Reduce memory footprint of InPrivate Filtering heuristic generation (5MB)
  • Binary size reductions (over 1MB saved)

Other Real-World

  • Decrease timer resolutions to 4ms from system default of 15.6ms
  • Timer resolution aware of Power Options
  • Find on Page performance

Standards & Platform

CSS

  • CSS3 2D Transforms

DOM

  • DOM events (updated for spec changes)

HTML5

  • Canvas global­Composite­Operation
  • Canvas­Pixel­Array performance
  • Geolocation API
  • HTML5 semantic elements
  • Allow alternative video codec (WebM)
  • Accessibility of media controls

Compatibility View List

  • Software fallback list for GPU/drivers in XML CV list
  • F12 console logs for CV sites and support for Tracking Protection

User Experience

Tabs

  • Optional full tab row
  • Close box for inactive tabs
  • More identifiable active tab

Frame

  • Paste & navigate (Ctrl+Shift+L)
  • Refine search queries in onebox
  • Reduced frame pixels
  • Better favorites bar integration
  • Menu bar toggle
  • Intranet search by default option

Notifications

  • Display download speed
  • Auto dismiss notifications
  • Animated downloads notifications
  • Improved app reputation notifications

Pinned Sites

  • Pin to vertical task bar
  • Multiple home pages in pinned site
  • In-page drag-to-pin support

Trustworthy Browsing

Tracking Protection

ActiveX Filtering

InPrivate

  • InPrivate pinned sites

以上更新有很多是根据网友们的反馈意见做出的改进，比如标签(Tab)上的关闭按钮，把标签栏放在地址栏下方（而不是右方）...  谢谢大家对IE9提的宝贵意见以及支持。 

新的标签栏截图：

IE9 标签栏