Neill Blomkamp is for sure making a new Alien movie.  Fox is producing it, and Sigourney Weaver wants to come back as Ripley.

That is about all we know for sure thus far, aside from that amazing concept art of Neill’s.  BUT, thanks to this recent interview with both Blomkamp and Weaver, it appears this new Alien film will basically disregard Alien 3 and Alien: Resurrection.  Neill says he’s designing the film to sit in sequence after Aliens:

Speaking to EW, Blomkamp says,

Over the years, I came up with a story for a film in that universe that I wanted to make. And then when I talked to her about her experience making those films and what she thought about Ripley and everything else, it informed and changed the film I wanted to make into something different. It just sort of stuck with me. A year later, when post-production was winding down on Chappie, I started fleshing out the idea for a film that would contain Sigourney. Fox never knew. I just worked on it when I could. Before I knew it, I had this really awesome film with a lot of artwork and a lot of backstory. And then I didn’t know whether I was going to make it or not. So I just kind of sat on it for a while.

My favorite thing to point out here is from SlashFilm, who say Blomkamp said he’d never work for Fox again, thanks in large part to Rothman. Now Rothman is out of Fox and installed at Sony, which released Elysium and will release Chappie — just in time for Blomkamp to go back to Fox for Alien.)