From the Photoshop Facebook page:
What do the iPhone 4, new iPad and new MacBook Pro have in common? Awesome Retina displays. Photoshop CS6 appeared onstage at WWDC, showing how we’ll soon provide unparalleled fidelity, power and precision on this exciting new hardware. It’s not ready for prime time just yet, but the team is hard at work to bring what you saw on stage to the desktop in the future!
(Nice to see the prominent use of an eye.) I don’t have further details (date, info about other apps) to share at the moment.
[Update: The release is due this fall (i.e. within the next couple of months). It’s a big task.]