Lee Hall (Billy Elliot) has adapted Andrew Lloyd Webber’s musical, which itself was based on the T.S. Eliot novel Old Possum’s Book of Practical Cats. Cats is dated for a Dec. 20, 2019, release. Wilso. Alvarez won a Tony in 2009 for originating the title role in “Billy Elliot: The Musical.” He will play Bernardo. Filming for “West Side Story” is set to begin in the summer of 2019. The…