People have finally wised up to the fact that the S7 is not going to achieve RoI unless you have VERY VERY cheap electric - and that has always been the case, and that fact just keeps getting worse and worse (unless the current lull in hashrate climb manages to last about 3 months LONGER than I currently expect).


 I suspect Bitmain is having their current fire sale in the hope of getting their money back out of the BM1385 chips they've already bought before they become almost worthless due to next-gen miners blowing them out of the water - and I have some doubt that Bitmain was expecting Bitfury to go public on THEIR next-gen chip much less start pushing it to anyone OTHER than huge farms.
 I get the strong impression Bitmain's answer to the new bitFury chip hasn't even taped out yet, or taped out recently enough they aren't going to have a new miner available before the halfing - leaving them rather behind the curve on what should prove to be THE most important ASIC generation in Bitcoin mining history (other than perhaps the original generation gear).


 There's also the BW.com/LKetc second-gen chip for them to worry about, the question of WHEN Innosilicon will release the A3 (which in theory could be literally ANY DAY NOW)....