Remember at the end of House of M when Scarlet Witch said "No More Mutants"?
Well, one of the mutants who lost their powers was Quicksilver.
Rumor has it that Marvel is going to retcon Pietro and Wanda into being inhumans instead of mutants (starting with the Magneto revelation from Axis).
So are we going to have to get a retcon that Wanda slipped in a "No More Inhumans but really just Quicksilver and me" when we weren't looking? Because that's kind of a big plothole if they retcon that.
Anyways, if Wanda and Pietro do become Inhumans, how do you think Marvel will explain why everyone thought they were mutants for years?