Hey! Just couldn't help but add my $0.02! For the M$ server products (NT and 2000), the initial release is always Service Pack 1. It seems odd to me (not really, I just consider the source) that the initial release of a software package has a service pack already. I would therefore state that this is the WRONG way to be doing it. IMO, I think you should release the initial potato as 2.2r0 (If nothing else than to NOT be like M$)!
Thanks, Brooks