iTunes 10.5 Launches Ahead of iPhone 4S, iCloud, iTunes Match

Every iPhone includes an update iTunes, but this may be the last time iPhone users need the media-playing computer software.
One of the things that iTunes 10.5 brings is the iOS 5 update for iPhones, iPads, and iPod touches, which will do away with the need to tether your mobile device to a computer to sync it. The new release also enables Wi-Fi syncing between the Apple mobile devices and iTunes on a PC or Mac.
In addition, the update adds some iCloud features, including iTunes Match, which will synchronize music on a user's computer with iCloud storage, even for songs not purchased via the iTunes store. Once the music is up in your iCloud, you'll be able to download it to any Apple device ... »read more

More at: PC Magazine Add additional source