David Magee has written the script, which draws on material from author P.L. Travers' other Poppins novels that followed the original. The story this time finds the magical nanny returning to the Banks family in Depression-era London to find that her charges Jane and Michael Banks have now grown up. Michael has three children of his own, and they all need a little help re-discovering the joy in life.
Poppins will need the help of street lamplighter Jack (to be played by Hamilton musical god Lin-Manuel Miranda, who recently departed the show he created and starred in to pursue other projects) and cousin Topsy, which will allow Streep to once again show off both her award-winning acting ranging and her proven singing voice.
Marc Platt (who also worked on Woods) will be the producer, while Marc Shaiman and Scott Wittman are handling the music chores. The movie should be arriving just in time for Christmas 2018.