The new Poppins film will take place in Depression-era London, some 20 years after Disney's classic Mary Poppins, and will draw from existing Poppins tales in the rest of author P.L. Travers' 1934-1988 children's book series. The practically perfect 1964 screen adaptation starring Julie Andrews pulled its story primarily from the first installment in Travers' eight-book series; the new project (which is decidedly not being developed as a sequel) will explore Mary's further adventures with the Banks family and beyond as illustrated by Travers' seven additional novels.
The 2013 flick "Saving Mr. Banks," which chronicled Walt Disney's attempts to get Travers to agree to let the studio adapt her books, famously depicted a rough-around-the-edges Travers who bristled at the thought of her character being featured in a musical. But according to EW, Marshall and co. are collaborating with the late author's estate on this new project, so perhaps it will take a slightly darker tone than the original "Poppins" portrayed.
Messing with a beloved property like "Poppins" is always tricky, but if filmmakers can leave well enough alone with the original and forge a new direction with this follow-up feature, we're willing to remain (very) cautiously optimistic for now. Stay tuned.