Complex sentence: In December 2015 It was announced that Dimension films no longer had the rights to the Halloween franchise, it followed in May 2016 that Miramax and Blumhouse Productions were developing a new Halloween film which they will co-finance.
Split into simpler sentences: In December 2015 It was announced that Dimension films no longer had the rights to the Halloween franchise. It followed in May 2016 that Miramax and Blumhouse Productions were developing a new Halloween film which they will co-finance.