Here is the list of expected changes that will be coming with the update:
Added support for Medion Lifetab and the Asus Eee Pad Transformer Prime
Integrated with Immersion Haptic Vibration Feedback
Tailor your visual experience with new video display settings
Improved controls for supported gamepads
Improved controls for Xperia Play
Game can now be installed to an SD card
Gamestop Wireless Game Controller Fully supported.
Additional technical fixes
So if your device is now listed as a supported device for Grand Theft Auto III for Android, you might want to head over to the Android Market to download your copy today!