I just got my Rocket/Groot and Iron Man ToyBox figures and Rocket/Groot has upcoming figure teaser on the back of the card. Looks like possibly Captain Marvel, another Captain America and another Spider Man. Iron Man card back has Thanos, Grey Hulk and Miles Morales. Nothing new there.
With the selection of White Rabbit I'm hoping the BAF will be Frog Man... since the only comic I've ever seen White Rabbit in was a Marvel Team-Up with Spidey and Frog Man. Dare to Dream! :)