WW has already said that he won't work on Superhuman 2 immediately, since he wants to work on either the vampire or necromancer games he has in mind, he also has the idea of a sorcerer game, which was actually the game he wanted to make before Superhuman, but from what he has shared in his streams, he doesn't know if he wants to make the sorcerer game anymore, that he'll maybe go through different medium.
MC evolving twice is so unlikely with how WW has handled the EVOS until now, we know that evolving three times, even four times is possible, but MC's EVOS have always been one at a time and only at moments he needs them, with his 3rd being artificial as he was technically not ready and it only happened because the monster material cocktail forced him.