Well, these were put out at the end of 2021. I'd think it was easier to make Blu-Rays (since they're still a current format) than it would be to make UMDs.
I bought Class of Heroes 2G for the PS3, but it's shrinkwrapped with a special hologram sticker from the publisher on it that makes me not want to open it. So I fired up my emulator and played Class of Heroes 2 for the PSP - yeesh, I'm glad I didn't open my PS3 copy. Massive amounts of dialog because you end up talking to absolutely everybody in the entire school before you can even consider starting the RPG. I gave up after 30 minutes and I still hadn't learned a thing about the game mechanics.