On the forums, you can now download the PS3 version of Persona 5. It’s a 16 GB PKG file.
Also available is the DLC PKG, and a dumped/MP3-converted rip of the in-game OST, which has about 90 tracks from Persona 5, complete with properly translated track names.
Please note that for now these are just for you to datamine and explore for fun. I don’t think you can actually play the game with these, even on a modded PS3.