• Enables (previously inactive) WPA2 support for the official Xbox 360 Wireless Networking Adapter.
  
• Disables support for 3rd-party memory cards (e.g. Datel Max Memory).
  
• Enabled Facebook, Twitter, Last.fm and Zune Marketplace on November 17, 2009. Facebook, Twitter and Last.fm are only available to Xbox Live Gold Members.

Zitat:* Adds the ability to install Game Updates to the HDD
* Adds a new Anti-Piracy Scheme 2.5 (Fable III doesn't work on all iXtreme firmware).
* Adds a visual refresh to incorporate elements of Microsoft's Metro design style.
* Adds a motion menu specialized for Kinect under system settings.
* Adds ESPN as an app download via Xbox Live. Certain ISPs do not support the service. ESPN can be limited or blocked entirely.[3]
* Adds Kinect Functionality for Zune, Last.fm, Sky Player.
* Adds Video Kinect as an app download via Xbox Live. This app lets players video chat with the Kinect sensor bar.
* Updates Zune adding Zune Music and ZunePass functionality.
* Updates Game Marketplace with a Metro-style redesign and easier navigation.
* New codec for Xbox Live voice chat that improves communication quality.
* New boot screen animation with redesigned Xbox 360 orb and ribbons.
* Better connection when using a wireless network adapter.
* Improved Netflix integration by enabling to search the entire Netflix catalog from within the console.[4]
* Added Netflix support for Canada.
* Improved Avatars to 2.0 version with human-like proportions.
* Improved HDD load time.
* Added a "Quick launch" menu to the guide which allows players to quickly load games.
* Added/Modified "toast" notifications. One example being "Friends using this app." now shows when a friend uses Facebook instead of it referred to as a "game" when you start it.

Zitat:*Adds further anti-piracy 2.5 scheme to more popular games Halo: Reach, Call of Duty: Black Ops and Call of Duty: Modern Warfare 2.
*Fixes ‘Boot to Disc’ option.

Zitat:

• Reflashes the DVD drives : PLDS DG-16D4S, PBDS VAD6038 and PLDS DG-16D2S, to a new stock firmware : 0272, 04421C, 02510C.
  
• Table and anti-piracy 2.5 scheme updated.
  
• Support for new XGD3 disk format for games, adds 1GB of usable disk space and extra anti-piracy features to new games (This may not be compatible with some older model XBOX 360s.)
  
• Adds PayPal support as a payment option for all Xbox Live users, except Brazil, Chile, Colombia, Czech Republic, Finland, Greece, Hungary, India, Japan, Russia, South Africa, South Korea and Taiwan.
  
• Avatar Kinect. Allowing players to scan their face in real-time to match with their avatar.
  
• Adds multi-language voice commands for Kinect. (French and German confirmed.)
  
• Minor bugfix.
  

Zitat:

• System Software Changes/Other Mandatory update that prepared for subsequent growth of the service.
  
• Anti-Piracy 2.5 scheme updated

Zitat:This is a general system maintenance update and there are no new features that will show up once the system has been updated.

• Update contained a compatibility patch for the new Xbox 360 Speed Wheel.
  

Zitat:

• Twist Control (Metro design language) System Software Changes Stereoscopic 3D for games & experiences that support it.
  
• Support for dual play.
  
• Updated Standard and Kinect Dashboard with Full Voice Dashboard Commandment Support.
  
• Skype
  
• Bing on Xbox.
  
• YouTube on Xbox 360 with Bing Search support.
  
• Updated Party chat.
  
• Beacons
  
• Xbox Live Changes ABC iView and SBS on Demand Australia.
  
• Live television on Xbox 360 with Bing Search support.
  
• RTVE. – Spain.
  
• YouTube.
  
• BBC.
  
• Canal+.
  
• Antena 3. – Spain.
  
• Dailymotion.
  
• Verizon. – U.S.
  
• Expanded Kinect Voice Support.
  
• Kinect Dashboard with Full Voice Dashboard.
  
• System Software Changes/Other Xbox 360 dashboard preview program – Fall 2011
  
  

Zitat:Design Changes

• Complete design change in the Metro Design Language, with an interface similar to the Windows Phone and Windows 8 operating system.
  
• System Software Changes Cloud Storage for Games Saves and Xbox live Profiles.
  
• Facebook Sharing.
  
• Stereoscopic 3D for games & experiences that support it.
  
• Support for dual play.
  
• Updated Standard and Kinect Dashboard with Full Voice.
  
• Skype
  
• Bing on Xbox.
  
• YouTube on Xbox 360 with Bing Search support.
  
• Beacons
  
• Xbox Live Changes ABC iView and SBS on Demand Australia.
  
• Live television on Xbox 360 with Bing Search support.
  
• RTVE. – Spain.
  
• YouTube.
  
• BBC.
  
• Xfinity On Demand - U.S.
  
• Canal+.
  
• Antena 3. – Spain.
  
• Dailymotion.
  
• Verizon. – U.S.
  
• Vevo - U.S. & Canada
  
• Syfy - U.S.
  
• Dailymotion - U.S.
  
• HBO Go - U.S. (Select providers only, much like ESPN3)
  
• Expanded Kinect Voice Support.
  
• Netflix UI changed Netflix parties removed
  

Zitat:System Software Changes/Other

* Flashes the CB to prevent the Reset Glitch Hack on original Xbox 360 models.
* Fixes color space issue and improves overall performance.
* Requires Credit Card to be added to use the 1 Month Gold free trial membership (Free trial will now be set initially for Auto-Renewal.)