Box Cutter was kind enough to post details for the SAR12 in the comment section of Grey Ops, so here's the lowdown:
Price: $1000 USD
Pre-order deposit: $150 USD
Availability: September 1st 2012
Action: Semi automatic or bolt action (convertible)
What's also interesting is apparently their magazine feed system (very similar to that of the DMAGS) is patented. I wonder if that's going to cause any conflict in the future.