Apple has today released iOS 4.3.3 for iPhone, iPad and iPod touch. The minor iOS update delivers iPod bug fixes and addresses battery life issues. Most notably the update also changes how iPhone and iPads store location information.
As outlined in Apple's question and answer on the location tracking bug the new software will cease backing up of the database, reduce the size of the database of WiFi and cell towers cached on the phone and delete the cache when location services are turned off.
iOS 4.3.3 is available for iPhone 3GS, iPhone 4, iPad 1 and 2, and third and fourth generation iPod touches. Apple has released iOS 4.2.8 for the CDMA iPhone 4.