We don't have it yet at work, because making your OS upgrade available on the app store isn't the most corporate-friendly arrangement. They're still trying to figure out how they'll do the site license and get actual installation media, which I would assume Apple has some sort of plan for.

Most of those UI changes (other than the full screen stuff) sound like steps backward, but the one Lion feature I really do need is whole disk encryption. PGP always has incompatibilities with OS updates, so having the encryption baked into the OS will be a welcome addition.

Finder still sucks? Big surprise there...