Each weapon has 2 additional aspects (aside from base/Melinoe aspect) from what I've seen. Havent unlocked them yet myself as I've only put a couple hours into it so farNow I get what the notice about aspects in future major updates meant, this is just like the first game. In early access, the infernal arms in the first game had 2 additional aspects, but then an update that I think also introduced Demeter added the Aspects of the non-Greek figures like Arthur and Gilgamesh.