I was waiting for BD for ages, then gave up about 6 months ago. Just looked it up again and saw an 8100 for sale, but from what I'm hearing, there weren't any advantages in holding out for BD. I'm happy I gave up waiting and got my 2500k 3 months ago. I was telling people in the forums it would probably be a flop and everyone kept telling me how it would be revolutionary and make Intel cringe. Guess not, and so happy I didn't wait and switched back to Intel. For years AMD blasted Intel about HT and kept saying real cores are better than virtual cores, yet BD modules are not really 2 full cores each, but kinda. The specs aren't spectacular either way, my x4 965 still comes close to the benches and my 2500k bests it most of the time on stock speeds.
I hope after the Phenoms get phased out, the BDs drop the prices to be the best budget CPU... because it ain't "really" 8 cores, seeing that 4 "real" cores or 4 "real" cores with 4 "virtual cores" still beat it in performance AND price!