OCS R2 session on Technet from a couple of colleagues:

“In this 60 minute session Brett Johnson and Julian Datta Shepherd (?) will provide an overview of OCS 2007 R2 covering the new features and functionality which will enhance business productivity and reduce costs. This session will focus in on the voice capabilities available with OCS 2007 R2. The webcast is aimed at ITPros that have some experience with Office Communications Server and VoIP.”

Register here.

..and just in case you haven’t seen these already:
Bretts blog url: http://blogs.technet.com/brettjo/
Julians blog url: http://blogs.technet.com/julian/