This update does three specific things:
- Reduces the size of the cache
- No longer backs the cache up to iTunes
- Deletes the cache entirely when Location Services is turned off
This update is for the following handsets:
- iPhone 4
- iPhone 3GS
- iPad 2
- iPod touch (3rd and 4th gen)
If you're an iPhone 3G owner, you're outta luck ... no update for you unfortunatly.
iOS 4.3.3 is a 666MB download.