Flanker Questions

Hi all

A few questions about the Su-27s

With all uncertain future about the Russian’s PAK-FA, I’d like to ask what will be the future of the Flanker’s family in Russia Air Force?

How long the Su-27 will remain in Russian service?

Last one:

I’ve heard about Vympel developed a model of the AAM R-27 in active radar homing guidance. Is it true? Is it in Russian service already?

Thanks in advance