Here is a nice set of vids on their youtube channel dealing with the very nice new
physics and ragdoll features . New Ragdoll feature videos
Also if you missed it, Maya has now gone to just one version and they have a bundle with MotionBuilder called the 'Autodesk Real-Time Animation Suite 2010
Cory Mogk posted more info on his blog , it is a short list but it gives you a quick overview of whats new.
MotionBuilder 2010 offers:
- Finger controls for Actor
- SDK access to Actor
- Custom Keying Groups
- Pose Controls for Objects
- Enhanced support for 3ds Max Biped and Softimage Character templates
- Performance Updates
- More options for Joints in Physics simulations"
Also if your on Twitter you can look for MotionBuilder posts under #MB or #motionbuilder and more general news at #autodesk