The sequel to Frozen is moving along a bit faster than expected.

In a recent interview with E!, Kristen Bell said that the Frozen 2 screenplay has been completed, with voice recording beginning next month.

Bell revealed that she has "a couple clues" about what's going to happen in the second installment, although she thinks it will likely be impossible to top "Let It Go."

"Nothing will top 'Let It Go,' ever," she said. "It's the most anthemic song I think I've ever heard. And nothing should top it. Even when I hear it, having heard it as many times...it gives me the tingles. It's a brilliantly written song."

We still don't have a release date for Frozen 2, although ABC will be airing a Frozen holiday special in 2017, according to Entertainment Weekly. Kristen Bell, Idina Menzel and Josh Gad will all return for the special, to be directed by Kevin Deters and Stevie Wermers-Skelton. Frozen is also coming to Broadway in spring 2018.

Frozen directors Chris Buck and Jennifer Lee will return to direct the sequel, as we previously reported. Buck said that as he and Lee were making "Frozen Fever," the short that premiered before Cinderella, an idea for a second installment popped into his head.