Some more questions have come in that I figured I would answer:
Q. Can you upgrade from Beta to RTM?
A. Yes, there will be a tool to do this. Changes should be relatively minimal.
Q. What should I use in lieu of Application Center?
A. I answered this before, but will answer it again. We provide Commerce Server Staging, which is an effective replacement (and potentially then some depending on your requirements) for the Web farm staging features in Application Center. It is not a replacement for NLB, CLB, or the Health Monitoring aspects of Application Center.
Q. Can you use CS2006 Data Warehouse and Analytics against an older Commerce Server deployment?
A. No, this is not supported.
Q. When will there be an updated Starter Site?
A. At release candidate for our TAP customers. At RTM for everyone else.