Correct.
Game #2 is not at all related to PoP - totally different universes, stories, etc. I might slip a reference or two to PoP into Game 2, but they'll be totally unrelated.
I'm intentionally leaving the door open for me to return to the world of PoP some time in the future, because I think there is more to explore, but... Not any time soon. Frankly, after nearly five years of working on PoP, I'm ready to change things up creatively and explore new worlds and new ideas.

Game 2's been simmering away in the back of my head for years now, and Game 3 (if/when we make it there) has been simmering for even longer, so I really want to pursue these ideas. I think they'll be pretty great, so hopefully you'll follow and support Game 2 when it comes out!