Adobe releases public beta of Photoshop CS6 - ZDNet (blog)

... "the beta requires online registration activation"
I have an AdobeID which might be in a cookie somewhere from a recent Lightroom 4 trial ... but I wasn't asked to supply it. I chose 'try' instead of 'install' and wasn't asked for a serial ... or to activate.

"dont miss Lori Grunins post" ... or Scott Kelby's.

I only had one problem: the splendid new graphics speed-up via the Mercury engine didn't work with my (nVidia) graphics card: all attempts to open an image caused a program crash, followed by a reference to an AMD fault report suggesting registry edits to keys which didn't exist.

Approach with caution!