Following reports of iTunes 10.3 having some issues with iOS devices in the syncing process, Apple released iTunes 10.3.1 a few hours ago, quite possibly trying to fix the errors reported in the original 10.3 version made available earlier this week. After the WWDC keynote Apple seeded iTunes 10.5 beta to developers to enable sync with devices running iOS 5, but iTunes 10.3 was also released to the public to bring initial iCloud features like basic support for iTunes in the Cloud in the United States, Automatic Downloads, as well as a refreshed UI.
iTunes 10.3.1 is available for Mac and Windows machines, and can be downloaded from Apple’s support site of the Software Update control panel. The official changelog doesn’t include any details on what’s been updated, simply reporting the new features introduced in iTunes 10.3.