This patch addresses the following:
• Compatibility fixes for Windows 8
• Other minor fixes

Max Payne 3 has just been updated with new free content.

Now Includes the free Disorganized Crime Pack for Max Payne 3 to battle above the streets surrounding Max’s old apartment in the new Hoboken Rooftops multiplayer map. This pack also includes several new modifiers for Score Attack in Arcade Mode including Explosive Rounds where all your bullets detonate on impact, Lone Wolf AI for much more aggressive enemies and Headshots Only where the only way to kill your enemies is with a bullet in the head.

Also, contains the Gorilla Warfare Pack that includes three items to customize your loadout in Max Payne 3 — the Gorilla Mask Item gives you extra adrenaline for melee kills from behind, the Lucky Coin Item give you extra cash when looting bodies and the Booby Trap item makes your corpse booby trapped so that it explodes when looted by another player.

Note: Add-on content for Max Payne 3. Regional age and location restrictions may apply.

-Security fixes
-Various bug/stability fixes
-MSAA white outline fix
-Various multi-head improvements
-Text chat added to lobbies by default
-Mouse acceleration setting added to controls menu
-Aspect ratio setting added to the graphics menu

• Steam overlay now works in DX11 mode.
• Fixed issue where a small number of valid display resolutions were missing.

• DirectX 11 support added for improved performance on many Windows Vista and Windows 7 setups using DX11 graphics cards
• Option added to game launcher allowing switching between DirectX 9 and 11 renderers
• Additional checks added that make sure a selected video resolution is fully compatible with L.A. Noire

• Fix to prevent mouse cursor from turning on when using -str command line to improve performance
• Render state optimizations to improve performance
• Single-threaded renderer option added to game launcher to improve graphics performance on certain setups
• Crash when exiting the game is now fixed

Updates to Grand Theft Auto IV have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:

Rockstar Games Social Club

• Remove Rockstar Games Social Club application
  
• Separate RGSC application no longer required to launch game
  
• Social Club login now occurs during the launch process
  

Shadows

• A new, less memory-intensive, and better-looking scalable shadow solution has been implemented
  
• Enhanced Night Shadows added with user-selectable level of detail (replaces Shadow Density)
  

Performance

• Rendering optimizations have been made to improve performance, particularly when enabling shadows
  
• User-configurable graphics settings have been added for shadow control
  
• Improved memory management
  

Multiplayer

• Enhanced security to isolate users from cheaters and hackers
  

Episodic Content

• Provide in-game support to purchase "The Lost and Damned" and "The Ballad of Gay Tony"
  

Bug Fixes

• Vehicle shadows re-enabled between 8pm and 6am
  
• Fix floating street textures
  
• Pedestrians in vehicles appear further out from the player to allow for long range sniping
  
• The Moon has been implemented with simulated lunar phases
  
• RESC 10" error fix for specific hardware configurations