Adobe today unveiled Photoshop Touch, a new SDK that will allow Adobe and third-party mobile apps to interact with the desktop version of Photoshop CS5 in real time. It looks poised to shake up how we think about the relationship between tablets and computers.

Almost every year, Apple releases a new version of iTunes with some new feature. Last year it was Home Sharing. This year, it’s Ping. Apple also usually tweaks the UI, many times creating a backlash. This year Apple has outdone itself.