I read they're going to be rolling in the new "open" AMD/ATI drivers into this one, Mark Shuttleworth released some official blurb about being really pleased with AMD and wants to support their efforts. As an ATI owner/user I can only clap in support.
EDIT: news blurb link:
[Phoronix] Mark Shuttleworth Talks On ATI's New Linux Drivers
EDIT 2: ok I got that wrong, he *wanted* to get it into 7.10 but technicalities are holding it back, it's going in the 8.0 something.