Russia Air Force's Flanker Doubt

Hi all

Just wondering…

What is the current plans of the RuAF about the Su-27? I wonder that the Su-27 Flanker B/UB will be all replaced by the PAK-FA, but what about the Su-27SM? It will also be gone? The Su-27SM2 (Su-35BM) will be in service along the T-50 but the Russians will keep the SMs in service too?

Thanks in advance