Doing some catching up on Twitter yesterday, I came over of a couple of nice links on the 10.1 Beta release. Some of the busswords are Global Error Handling, Microphone Access, Multi Touch & GPU Acceleration:

GPU benchmarking on video playback (i.e. from 60% to 12% CPU usage on YouTube in 720p!):
http://www.engadget.com/2009/11/17/adobes-flash-player-10-1-beta-gpu-acceleration-tested-document/

Flash Player 10.1 articles (with Videos) from Adobe:
http://www.adobe.com/devnet/flashplayer/

Download it on Labs:
http://labs.adobe.com/technologies/flashplayer10/

Release notes:
http://labs.adobe.com/technologies/flashplayer10/releasenotes.pdf