RIM mentioned during the keynote that Flash 11 and AIR 3.0 are in the PlayBook preview built of OS 2.0. These new versions of Flash and AIR allow for slick GPU accelerated 3D games as you can see in the screenshots below they were showing off. Pretty slick for Flash.
They also showed off WebGL on the PlayBook browser which you see above but what they didn’t say was that the PlayBook developer beta that was opened up today includes WebGL support for developers to test out. That means 3D games in the browser without Flash! I think that is a first for any mobile platform. Pretty slick!