No release dates or prices were mentioned.
Funko obtained the license to make Pop! figures of Pokemon earlier this year, and released a Pikachu Pop! figure that was exclusive to Target. Funko stressed that they planned to take the release of future Pokemon figures slowly, even though there's over 800 different Pokemon and countless anime figures to choose from.
The new figures could be timed to the release of Pokemon: Let's Go, Pikachu! and Pokemon: Let's Go, Eevee!, the new Nintendo Switch games that are set in the Kanto region originally explored in the first Pokemon games. Bulbasaur, Charmander, Squirtle, and Meowth will all be available to find and capture in those games.
It's also possible that the "M(Chase)" figure could be Mewtwo in its unique mechanical suit, which is how the Pokemon first appeared in the Pokemon anime and its subsequent Pokemon the Movie appearance. While the reference seems specific, that Pop! would probably be popular among fans who still tear up when remembering the first movie.