To update your game just head over to the Android Market on the web or on your device where you'll be prompted to download the latest version.
- The addition of Integrated with Immersion Haptic Vibration Feedback
- The ability to tailor your visual experience with new video display settings
- The ability to install the game to an SD memory card
- Improved controls for Xperia Play and supported gamepads plus full support for the GameStop Wireless Game Controller
- Additional technical fixes
Rockstar have stated that an update for the iOS version is currently being worked on, more information will be coming forth on that soon.