Peter Jackson?s next movie, the YA adaptation ?Mortal Engines,? will land in theaters on December 14, 2018, Universal announced on Thursday. Zane Weiner (?The Hobbit? series), Amanda Walker (?The Hobbit: An Unexpected Journey?) and Deborah Forte (?Goosebumps?) also produce, while Ken Kamins (?The Hobbit? series) executive produces. var googletag = googletag || {}; googletag.cmd = googletag.cmd || []; googletag.cmd.push(function() { googletag.