Emily Blunt, Lin-Manuel Miranda and Meryl Streep will all feature in the film
Released in December, the sequel will also see the return of Dick van Dyke and features a number of original songs, some of which can be heard in the trailer.
It follows the Banks family decades after Mary Poppins' original visit, with Blunt taking on the role of Poppins, formerly played by Julie Andrews.
It was also announced last week that Mary Poppins would be returning to the West End next autumn.