Just got an email from " No rply@bitmaintech.com offering a "presale fpr the new S11 at 74 THs and 1400 watts. $2200 each. Complete with Bar code payment options, Crypto only. TOTAL SCAM!! DO NOT FALL FOR IT. All purchases are done at Bitmain website and this is not. All emails from bitmain are from " webmaster@bitmaintech" not nrply@bitmaintech.com.
Wow, just got same email - but from info@am-airbrush-design.de and with 79 Th (not 74 ) 
Email looks quite convincing though... It is not mentioned on Bitmai web site. Here was attached description to email :
