Gutsy Gibbon Tribe 2, which will in time become Ubuntu 7.10 has just been released for testing. And we have screenshots too.
Here's the announcement
Pre-releases of Gutsy are *not* encouraged for anyone needing a stable system or anyone who is not comfortable running into occasional, even frequent breakage. They are, however, recommended for Ubuntu developers and those who want to help in testing, reporting, and fixing bugs.
And at Phoronix you'll find the screenshots