"Porygon Z planning"

#PokemonGO: Hi everyone, I know generation 4 is probably quite a way off, but I was about to (finally) evolve my porygon and began wondering whether it was actually a good idea or not.At least for me, porygon has been extremely rare. I hatched 2 of them early on and caught another a few weeks back, but other than that I've mostly walked my porygon to get to 50 candies. I also didn't see any porygon during the valentines event.Based on our knowledge of how previous new evolutions are introduced it's likely that when Porygon Z is introduced it will cost 25 candies to go from porygon to porygon 2 and a further 100 candies to evolve to porygon Z.My question is, do you think it's worth keeping the candies I currently have for porygon in preparation for when gen 4 is released or should I just go ahead and evolve to porygon 2 now? via /r/TheSilphRoad http://ift.tt/2sG3MVO