Emily Mortimer reportedly joined the cast this week as Jane Banks, rounding out the main characters. Emily Blunt, who is in place to portray Mary Poppins, gave several interviews this week to promote The Girl on the Train, and in them discussed a bit about Mary Poppins Returns. She described that rehearsals will begin in November, which suggests filming will begin within a couple months afterward. Considering the release date is already set for Christmas Day 2018, we're likely looking at an extensive post-production period. I'm guessing the special effects may be substantial.
As we know, Meryl has been cast as Poppins's cousin Topsy Turvy, a role that is not expected to be particularly large. With that in mind, it'll be interesting to learn exactly how much time Meryl is going to have to devote to filming. If her time commitment is modest, it would certainly provide for participation in other projects. Again, understanding that The Nix limited series is not a sure thing, we don't have a great understanding on when actual shooting would take place. More to come on that soon, hopefully. I'd also like to re-open the question of what people think the likelihood would be if Meryl had been officially cast in Saving Mr. Banks a few years ago that she would now be doing this role. Are the two projects too similar? I personally think she would still do Poppins, because my guess is that it's more about working with director Rob Marshall again, after having starred in Into the Woods under his helm.
Emily Blunt (Mary Poppins)
Meryl Streep (Topsy)
Ben Whishaw (Michael Banks)
Emily Mortimer (Jane Banks)
Lin-Manuel Miranda (Jack)
*cameos by both Julie Andrews and Dick Van Dyke are expected