They definitely mentioned the remakes of the original games because, playing as a girl wasn’t available yet in Pokémon Red and Pokémon Blue.
Directly to you from Twitter:
Time for a throwback! Trainer avatar items from Pokémon FireRed and Pokémon LeafGreen are now available! pic.twitter.com/smv3jR0PPE— Pokémon GO (@PokemonGoApp) February 26, 2018
…Wanna play? Buy a 3DS.
That being said, click on Pokémon Go for everything you need to know about the game. 😀