Part 2 Release date: No idea! We're working on it! Most of the puzzles are done, and we're slowly getting new narrative content in. We're trying to work out how and when to beta-test part 2 though. We'll try to keep you in the loop.
Regarding Sony, they got back to us & directed us to their developer signup page, but until we finish the actual game, I'm not going to have enough time to work on any ports- I had to go get a real (contracting) job before I went bankrupt D:
I was asking the devs again about the release date and Sony, this is what they said. The last line being especially... sad.