Assuming that the Modern Age is being pushed back to about 1700, I'd be surprised if it's not just called Russia. And since the Hermitage looks to be the associated wonder it will be purely Tsarist based.we will definitely get a exploration russia in some capacity. The question is will it be the Rus, Novgorod, or Tsarist Russia.
They also might go with Tsarist russia modern, based on the China and India trends—this opens the opportunity for something like an Alexander II leader for the first time, he fits into the timeline well, though we could just see Catherine again too.
I also wouldn't be surprised if we got a whole Third Rome path that went Rome>Byzantines> Russia. As for outside the Greek or Rome path, I could see it as easily as just getting a pantheon.
Also because of the whole India and China trends, my vote is going to go for Modern Siam for SEA, since they are avoiding modern names of countries.