I kind of doubt we'll see a PSN release. :/ I don't think it was "good enough" for them to give it that kind of attention.
Well, I'm a little less than halfway through the second game. It's decent enough. It's nothing ground breaking or absolutely amazing, but it's fine and I do like it. So, yeah, worth playing. And there's an anime? I thought there was only a petition for it? Or are you talking about the movie Galerians: Rion? If you mean the movie, the movie's good. I like it, anyways, but I also haven't played the first game yet to compare the two.