Good news Pokémon fans! There is a whole new generation of the little guys coming to Pokémon Go later this week, Tech Crunch reports. Niantic (the software company behind the popular game) will be evolving it to include over 80 Generation 2 Pokémon from the Gold and Silver series. See the announcement video above.

Chikorita, Cyndaquil, Togepi, Pichu, Snubbull and other classic Pokémon Johto region will be available in just a few days, yet an official release date has not yet been announced. Rumors about the classic Pokémon additions was first reported in November. Niantic also plans to bring more updates to the game, including new evolutions, new encounter gameplay and a variety of different berries.

John Hanke, founder and Chief Executive Officer, Niantic, Inc., shared in a statement:

“Today is a momentous occasion for our team here at Niantic which has been hard at work to deliver these additional Pokémon and build upon the encounter and capture mechanics for our passionate global community of Trainers playing Pokémon GO. Pokémon GO is a live experience which we’ll be continuing to support and evolve in new and interesting ways for years to come with new gameplay features, in-game and live events, more Pokémon to discover and much more.”

Prior to the update, Niantic launched their new mobile game Pokémon Duel earlier this year. Next, listen to the Back of the Class podcast hosts give their reviews of Pokémon Go below: