Today M. Night Shyamalan announced via Twitter that he's making a sequel to Unbreakable and Split -- combining the mythologies in his next new movie called Glass. Shyamalan said the film will be released January 18, 2018.

Unbreakable star Bruce Willis will reprise his role as David Dunn from the 2000 thriller, as will Samuel L. Jackson, who played the wheelchair-bound Elijah Price (aka Mr. Glass). James McAvoy and Anya Taylor Joy, stars of Split, will also return, according to Shyamalan.

The low-budget Split was a commercial and critical success, making nearly $140 million. Unbreakable made $95 million in 2000. Both films were shot in and around Philadelphia.

Greater Philadelphia Film Office executive director Sharon Pinkenson said that if all goes to plan, the film should shoot in Pennsylvania "We fully expect to be hosting the production of M. Night Shyamalan's follow up film to Unbreakable and Split entitled Glass," Pinkenson said in an e-mail. "As long as our PA Governor and Legislators pass the state budget and include the film tax credit, we will shoot the movie in the Greater Philadelphia area. We couldn't be more excited!"