RC1 to Release version upgrade - possible or not?

[Sean]

As for offical support from MS, as far as I know you have to be a member of TAP, which I really doubt anyone here is.

Well WE'RE on the TAP, courtesy of Dell and have a suite of 20 machines running build 7201 right now, quite happily, so you doubt wrong, sir!
I'd like to point out that we have no affiliation with the original poster, BTW!
*edit* and to tell you the truth the very fact that we are able to roll out Win7 pretty much straight away without months of testing and meetings was one of the main reasons Dell wanted to work with us on this in the first place */edit*