I'm curious if they binned the 6970's and came up with the 6950's due to defective shader cores or some other defect. I've been looking at the 6950/6970's for a little while now and with this bit of info I really want to get 2 6950's and cf after upgrading the BIOS. I suppose the worse thing that can come of it is the cards don't run optimally and you flash the BIOS back to the 6950 setup and you still have quite a beefy system,
The pressing issue to buy 2 of these identical cards now would be to get your hands on two cards you know you can do this BIOS flash on before they create a "fix" to keep you from doing this.
Also, the resale on these cards should rival the 6970's price point later down the road. I say this as I had an EVGA 7xxx series card for sale on ebay and I had a watcher ask me what the BIOS rev was on the card and I later found that there were desirable versions of that card that they could hack the BIOS to get better performance and I probably could've gotten a bit more for that card if it was the version he was looking for.