New Brevoort Formspring

Hey Tom I remember from a pretty old Avengers run from Brian Michael Bendis with art by John Romita Jr where Kang messes up the timeline and the Avengers end up going to the future to meet their kids. The same characters from the animated movie Next Avengers. In that comic everyone says that Bucky is going to do something terrible that makes life hard for all superheroes. Did he do it in the comics already and if so what was it?