Just a quick heads-up: Apple has just released iTunes 10.6. The new update includes support for 1080p videos to match those available on the Apple TV. The update also brings with it a number of improvements to iTunes Match, including better song matching, and improvements to the way album artwork is downloaded and displayed. You can find it at this link or download it via Apple’s Software Update tool.
iTunes 10.6 Available Now
iTunes 10.6 now available for download, includes support for 1080p videos