Pretty much every note, every inch of tape that the Beatles ever produced has been bootlegged. Collectors like me already have all this stuff, though maybe the new releases might have better sound quality. The Beatles themselves would be first to admit that some of this was substandard work though, which is why it wasn't released back then in the first place
This couldn't be further from the truth. Hundreds (thousands?) of hours of material has still not seen the light of day. That isn't to say it's all *great*, but what has been bootlegged already only scratches the surface of what remains (not to mention the material that no longer exists).