JoBlo is reporting that the Marvel Untitled film scheduled for May 6, 2016 will be a sequel to this August’s Guardians of the Galaxy. This would be surprising as it would only leave two years between films. Also, while there has been no official word on a Guardians sequel, we do know they are already working on the third installment of the Thor franchise with the writing team already set.
The only Phase 3 film that has been confirmed by Marvel Studios is Ant-Man, scheduled for July 17, 2015.