I have been wondering this too. I am on 3.63 currently and enjoying Ark, but with me having Y's Origins and Y's VIII here in physical form, yet can't play them, as they both tell me I need to upgrade to 3.65 first, it is leaving me wondering if ARK is worth keeping, over the new games. I know the new Secret of Mana for Vita is due out in February, so again, at least 3.65 will be needed for that as well, only making my list of unplayable games even higher.
I assume for me, I would just erase ARK and all the PSP games games I have installed for that?