Apple has released iTunes 10.1.2 version for both Windows and Mac OS X operating systems. iTunes 10.1.2 brings some performance improvements and support for the CDMA iPhone 4. So iTunes 10.1.2 consists of a minor update bringing these small changes.
iTunes 10.1.2 Changelog :
iTunes 10.1.2 syncs music, movies, and more with iPhone 4 (CDMA model) and provides a number of important stability and performance improvements.
Download iTunes 10.1.2 for Windows and Mac from here