Greenhorne:
If you want one of these, MOVE FAST. A search on Pricewatch will confirm that the numbers of these cases available is rapidly decreasing. They are indeed being phased out, and from what I've been able to determine, although the next set uses the same case (front USB/Firewire), it may or may not have a stock side panel fan (optional), and will NOT have a TruePower PS, but the older models.
I'm a little clueless as to the reason for this move. According to the Antec CSR I talked to, it was supposed to be EXACTLY the same and only a name/branding change to Performance II, but looking at specs shows that isn't true. That's why I'm questioning if there was an issue with the power supply (although they're offering these seperately, just not on the cases). I can't believe that it's because of the extra cost of the TruePower (noone buying) as the 1080B certainly seems to be flying off the collective internet shelf. (Also, I don't buy that because there's too many people willing to spend $150-$200 just for an ALUMINUM case...I'm sure people didn't have much of a problem with $150 or so for a great, huge case with a big PS).
Hopefully, the Antec CSR will show up and clear up these issues.