The filmmakers are rumored to have already turned in outlines and treatments to the studio, which is desperate for a big blockbuster franchise. Warner Bros. reportedly wants the first movie ready by 2017 so it can compete against the highly-anticipated sequels Star Wars: Episode VIII and Avatar 3, which are slated for release that year.
While it isn't clear which way the filmmakers plan on taking this new trilogy, one of the early outlines reportedly explores how The Matrix was first created. It's too early to tell if this is the route they plan on taking since the story is still very fluid. It also isn't clear if Keanu Reeves will be back as Neo, or if any of the other cast members will be back.