Found some more information on TFS 2008 RTM from bharry's blog on MSDN. Most important to me and my team, is that the RTM media is not available for volume license customers until sometime in January. However, you could upgrade to the RTM Trial, and then add in your PID (Product ID) in January when it's finally available. The trial is good for 90 days, and bharry assures his readers that PID's for volume license customers will be available before then, and if not to contact him directly.

Upgrading to RTM sounds like something I will probably do around Christmas, as it's usually a slow week anyway. This would give me until the end of March to get my PID, which is probably close to when the beta we are currently running would be expiring anyway. Speaking of upgrading, it sounds like the process outlined by ScottGu which I talk about in my previous post, also apply to TFS.  There is a link script on bharry's post, which is supposed to help with the process. I will try to use the script for when I update my primary workstation, and will report back on how well it works.