We know that Pokemon Go Gen 2 is on the way. Here's the list of all of the Pokémon that are currently unable to evolve, but will be able to evolve once the Gen 2 update is released for Pokémon GO. There’ll be a total of twelve Gen 1 Pokémon that you’ll be able to evolve into Gen 2 Pokémon, once it releases. Better start saving your Candies for them!
Bellossom is an alternate third stage evolution for Gloom, which itself is an evolution of Oddish (It's final stage). In the original games you needed to give Gloom a Sun Stone in order for it to evolve into a Bellossom, so we’re not sure how it this will go down in Pokémon GO Again, third stage evolution, probably 100 candies. We’re not quite sure as of this moment which final evolution you will end up with..
Blissey is an evolution of Chansey, and although she looks only a little bigger, she’s a good bit more powerful. Seeing as it’s only a second stage evolution, you’ll most likely be looking at 50 candies.
Crobat will be a third stage evolution for those pesky Zubat. Since it seems like Pokémon with high speed stats are getting the shaft in Pokémon GO, Crobat might not actually be very useful at all. It's a third (final) stage evolution so, we're guessing 100 candies.
Vapereon, Jolteon, and Flareon, we have Espeon, will be another evolution for Eevee, and it’s unknown whether there’ll be any sort of naming and evolving easter egg just yet, like with Espeon’s Gen 1 friends.
Slowking like Politoed was only obtainable by trading a certain Pokémon while it was holding a King’s Rock. In this case, that “certain Pokémon” is, you guessed it, Slowpoke. Since he’s technically a second stage evolution (final), he will probably require 50 candies to evolve.
Steelix is the evolved form of Onix, and he’s a second stage evolution, so you’ll probably be needing 50 candies to do the job.
Umbreon, which is another Eevee evolution, and you’ll probably be looking at around 50 candies, seeing as it’s a second stage evolution.
Hitmontop is a second stage evolution for Tyrogue, also coming to Gen 2. Currently, it’s unknown how you’ll be obtaining this one, but it’s probably got something to do with Tyrogue’s other two evolutions, Hitmonlee and Hitmonchan.
Kingdra is an evolution of Seadra, who’s an evolution of Horsea. Therefore, as it's a third stage evolution you’ll be looking at 100 candies.
An evolution of Porygon. It's a second stage so you’ll need 50 candies to level up, Porygon to Porgon2.
Politoed is an alternate third (and final) stage evolution, this time of Poliwhirl. It wasn’t quite an evolution, back in the day – rather, you needed to trade a Poliwhirl whilst holding a King’s Rock. In Pokemon Go you'll need 100 candies.
Scizor a Pokemon with awesome looks is the evolved form of Scyther. He’s a second stage evolution, and you’re probably gonna need 50 Scyther candies to evolve Scizor to Scyther.
These are the Pokemons gonna get evolved in Gen 2 update and you know what you have to do, right? Save Candies!