There are some Asus 1155 ver.3 (b3) boards in stock at TechNPS http://www.technps.com/computer-hardware/motherboards/. I had never heard of these guys before so I did some digging around. I found out they are a sister company of Digital Storm Custom PCs http://www.digitalstormonline.com/ , which sells high end gaming PCs, and they are located in the same building in Fresno, CA. TechNPS makes some of the RAM for these machines from what they told me. And these seems to be true based on some forum searches I did here on Tom's. I looked on the Digital Storm website and a lot of the machines available there have the B3 Asus boards, so I am assuming this is how TechNPS has access to these board already.
I ordered a P8P67 after speaking with someone on the phone(twice, they answered right away both times) at TechNPS, at the time they said they had 14 of these boards in stock ready to go. After checking again just a minute ago they are out of stock on these, BUT they still have some Deluxe boards with the revised stepping. I would have posted sooner but I was waiting for my Tom's new member confirmation email!
Anyway, before I ordered I asked them when the motherboard would ship if I ordered today and they said it would go out later this afternoon. My tracking number was already showing my item had entered the system a few hours ago so that is reassuring. So anyway just wanted to share my info with anyone else looking for a Sandy Bridge board.
I can't wait to get my machine built. It's been a long time coming and I am sick of looking at all the un-opened Newegg boxes in my room!