With the promise of improving the stability and application performance, Apple just released the 10.1.2 update of iTunes. where only two standing changes, and one irrelevant to users outside united states.
- Became possible to use AirPlay for instant, wireless video streaming from iTunes to a completely redesigned Apple TV;
- Established synchronization with the iPhone, iPad, or iPod touch running iOS 4.2.
- The third item, which had no immediate impact on our life – is to support the iPhone 4 CDMA.
Note : I would not recommend the installation to see if it is fully compatible with jailbreak.