Usually all you expect from a newer Ubuntu are a few minor tweaks, more drivers and new software updates. Not Ubuntu in 11.04 you don't. In it's latest installment, Ubuntu has sort of reinvestment the wheel, of computer user interface, drifting away from the ugly legacy concept to the more, graphically enticing and functionally simplifying UI.
The very beta Ubuntu is now a stable platform offering three sessions by default,
The Unity interface
Requires a 3D graphics solution with the required drivers. The ones with supported G-cards are in for a treat.