DC’s Captain Marvel may be gone, but Marvel’s is coming back, as per the above teaser. Details will be revealed at the Tom Brevoort panel at WonderCon on the 15th.
Captain Marvel’s last re-appearance (in Civil War) was similarly teased, Graeme McMillan reminds us.
Captain Marvel is currently planned to get involved in that AvX hoo-hah. Multiversity has the most expansive speculation, including the idea that Rick Remender will be involved.