Apple will release the update within the next two weeks, or possibly sooner. This isn't a major release, so Apple can spring it on end users at any time. According to the sources, the iOS 4.3.3 update will include the following fixes:
- The location database will no longer be backed up by iTunes.
- The size of the location database will be reduced.
- The location database will be deleted if Location Services are turned off.
- Battery life improvements.
- iPod bug fixes.