UPD:

1) S7 have published the seat maps for E170s. 1A/1C physically don't exist,so the Extra Space bulkhead seats are 2A,2C,1D and 1F. These are available for free to oneworld Ruby and above by selecting at OLCI, emailing [email protected] ,or calling the call centre by phone or thru the app. They are also available for payment.

Theses are the only extra space seats because E170 don't have mid cabin emergency exits.

2)Rumours have it that S7 will be going for an expansion from LED and this includes international routes too. So far sales have commenced for flights to KGD,TXL and BZK from LED.