Welcome R4 to Bitmain Family.
It seems they are announcing a new machine every week now

http://shop.bitmain.com/antminer_r4_silent_bitcoin_miner_for_home.htm?flag=overview

Marketed as a "silent" miner, to be used at home. From initial specs listed on Bitmain website, I could see 8th/s and 2600w (if I am reading correct). Do you think this could be a game changer? If not, I think we could finally have real home heaters (if not noisy)