lets assume we get 150 new pokemon. usually, there are only few pokemon that never evolve. and theres a good balance between 2 stage families and 3 stage families. so you can assume were getting about 70-80 new evolved pokemon. as we dont know exactly how many new pokemon will come, lets say i think about 50% of the new pokemon will be evolved pokemon of any kind.
Personally I'm hoping for a small amount. Though did have a thought. With the advent of Fairy type, it may be a chance to give Dragonair an evolution which would look... well, more like it does, instead of how Dragonite looks. Only old evolution I'd like to see, since that always bothered me. But honestly I don't expect a huge number of old evolutions, it seems like we'd see a couple by now.
Official Barthandelus and Cosmos of the Dissidia 012 Board.