BBC One just announced that they are resurrecting Luther for a 2 hour long special episodes and Idris Elba also confirmed it. BBC shared this message on Facebook:
Previously series creator Neil Cross expressed no intention to do a series four of the Luther but instead he was interested in doing a movie.
Luther is the best British psychological crime drama television series starring Idris Elba as the title character, Detective Chief Inspector John Luther, who works in London, Great Britain. A first series of six episodes was broadcast on BBC One from 4 May to 8 June 2010. The second series of four episodes was shown on BBC One in summer 2011. The third series of four episodes ran from 2 to 23 July 2013.
Elba has been nominated for a Golden Globe Award for Best Actor in a Miniseries or Television Film for each consecutive season, winning at the 69th Golden Globe Awards. The series has also received eight Primetime Emmy Award nominations.