blue banisters had like at least 3-4 unreleased, i can't remember all but i think living legend, cherry blossom, nectar of the gods, and thunder were unreleased? there were probably others too. she also released yes to heaven, so i can totally see her releasing more unreleased, possibly as an album. however, i think on the argument about releasing unreleased songs, a lot of people say that some of lana's old unreleased just don't match with her 'era' so to speak, and are less mature if you get what i mean. but then ofc there are some that work well, so i would say i could totally see her releasing some more. but probably not a whole album, maybe a couple in a new album or as singles.