We've been busy the last few months working on the next generation of Forums and Community. All of the hard work from everyone involved has paid off and the beautiful new sites are live. Sam, the dev lead for Forums, has a great post and video covering all of the features in detail.
Please check them out and provide feedback, the community products can not grow and improve without your participation.
Here are the direct links:
http://forums.msdn.microsoft.com
http://forums.technet.microsoft.com
http://forums.community.microsoft.com
Update, Expression forums are now live too!
http://forums.expression.microsoft.com