Monstrous Menagerie II: Hordes & Heroes has a launch date! Mark your calendars for November 12th, 2024. 300+ more monsters for your D&D 2024, or Level Up: Advanced 5th Edition games, plus new horde rules and rules for heroic monsters who level up alongside you--whether they be allies, companions, or foes! Click here to follow on Kickstarter!
Not really either... I'm not super well versed in pf2, but It's kinda 1.5ish maybe? there are a lot of interesting things I think are probably unique to starfinder in it.
The foundation of the game is 1E although there are a number of changes, such as the way full attacks work. From what I saw of 2E they really went in a completely different direction. If you are familiar with PF1 you can pick up 98% of SF very quickly; the last 2% is a bunch of tiny changes you won't realize were in the game until you have been playing for months.