In an interview with Deadline.com, Lapine said that aside from the new stage project he is working on — not disclosing any other details — "I'm doing probably a revival of Falsettos. And this summer I'm going to do the Encores! series of a show I did with Bill [William Finn] called A New Brain. It really didn't quite work, and so we're going to put a little work into it. And I'm trying to get this small movie off the ground in the spring. We'll see."

As previously announced, A New Brain will return to New York June 24 starring Tony nominee Jonathan Groff. Aside from the rewrites, Lapine will also direct the staging, which will play five performances through June 27 at City Center.

Lapine also talked about "She'll Be Back," the new song penned by Stephen Sondheim for the film adaptation of Woods that didn't make the final cut.

He said, "It was a song that came after Rapunzel goes off, and Steve wrote it, and of course we were so excited that he was writing a new song. And Meryl was excited, and she did it great, it was shot, it was in the first cut. And the song just stopped the action. With Steve it's not like a song is yanked out and put somewhere else. It's very site-specific and character-specific. What [the song] did is, it played fine but then everything after it started to slow down. It seems weird, the chemistry in musicals; it's really odd what it does."

Read more about the film from interviews with its stars, Meryl Streep, James Corden, Anna Kendrick and Emily Blunt.