Apple has released iTunes 10.2.1, only a few days after 10.2, which was released on March 2.
Unfortunately I can’t find any release notes or indication as to what has.
iTunes 10.2 added sync support for devices running iOS 4.3 and brought Home Sharing to iPhones, iPads, and iPod touches running iOS 4.3.
Perhaps iOS4.3 is coming tomorrow rather than than Friday? Friday of course just happens to be the release date of the iPad 2.