The PlayStation2 emulator Play! will be seeing a libretro port in the near future. We’ve reached an amicable agreement with two devs to make this happen. We’ll also be supporting their Patreon monthly from now on, just like we’ve supported other Patreon emulator creators for little over a month now as of this writing.
Note that this is separate from the PCSX2 core bounty, which is still ongoing and is still its own thing. We still need to find a bounty hunter for that one, though.