v. 4.1 is out! This version includes another batch of battle animations, a graphic rework for Ruampung and the party UI, and a number of bug fixes and other changes.
Every mon up to Gen 5 (#1-#649) is in the game and obtainable by the player, of which ~500 can be obtained through what I'd say are "regular" means, including all non-starter non-legendary Pokémon. I don't plan to introduce Gen 6+ for practical (it would take massive effort) and balance reasons...