Storm will be joining the Avengers in January in #21.
Rick Remender and Gabriel Hardman will be taking over Secret Avengers with #21.1 and will be introducing a new team. Led by Hawkeye, Captain Britain, Beast, and Black Widow have also been confirmed for the roster. Though this cover also shows Giant Man and Valkyrie.
Avengers Academy will be adding X-23 to their roster in #23, while #27 is being teased as the Avengers Academy vs The Runaways
Thunderbolts #171 in March will feature the current time lost team of Thunderbolts against the original roster.