In a recent interview with Empire about director Ridley Scott's upcoming The Martian, he confirmed those words that fans of the Alien and Prometheus franchises have been waiting to hear:
"I was already on to my next movie! I was starting to look for locations for my next movie, which is Prometheus 2."
Prometheus 2 Is Set To Start Production January 2016
We've known for a long time now that Scott has been planning a sequel to 2012's Prometheus, hinting that a second iteration in the franchise would reveal some of the questions left open at the conclusion of the first film. Damon Lindelof, who co-wrote the script to Prometheus, confirmed that elements of the plot were deliberately left unresolved for the sequel and that this film would move even further away from Alien as its predecessor did.
Lindelof didn't write the sequel script (hooray), replaced instead by Jack Paglen, (who wrote Transcendence) with the rewrite completed by Michael Green (known for Smallville, Heroes and, uh, the godawful Green Lantern movie) so this could go either way. The initial script was actually completed way back in 2013, with the rewrite completed last year. Scott has claimed that there's been as many as 15 drafts of the script floating around, which might not be a good thing if it means they've having trouble settling on a solid idea.
However, now it's been confirmed that production will begin in January 2016, it's probably fair to say that they've figured out what they're doing now.
So What Can We Expect To See In Prometheus 2?
The conclusion of Prometheus saw Elizabeth Shaw (Noomi Rapace) and David (Michael Fassbender) escaping the planet in a ship, intending to continue her search for truth by aiming for the Engineer's home planet. Rapace has previously spoken about the possibility of her character, Shaw, going on to discover God and the Devil on her journey:
"I know that Elizabeth Shaw wants to go to paradise. I say that in the first one. I don’t wanna go back. She can’t go to Earth. There’s nothing left for her there really. She wants to go where they come from, those giants, those creatures. In her head that’s the dark paradise. What’s there? God, maybe? God or [the] Devil. I don’t know. I don’t know where [Ridley Scott’s] gonna take us but I can’t wait to go there."
Shaw's strong Christian beliefs are alluded to throughout the first film, and they are what drives her exploration of humanities origins. Indeed the search that she has been on is for all intents and purposes a search for God; whilst it may not be a representation of God in the traditional sense, the Engineers are the creators of humanity.
But lets not forget that they are also the destroyers: the Engineers tried to wipe out humanity. So they could conceivably function as both God and the Devil, black and white, yin and yang. Shaw, like the rest of us, wants to know why they wanted to destroy humanity after creating it in the first place, and Scott has confirmed that it's this story of Shaw's search for "paradise" we'll continue to follow in Prometheus 2:
"If it is paradise, paradise cannot be what you think it is. Paradise has a connotation of being extremely sinister and ominous."
And, Alien 5?
Neill Blomkamp has dismissed the rumours that Scott was pushing for production of Prometheus 2 to go through before his upcoming Alien 5, putting the latter on hold with the potential to send it into the unescapable abyss that is Development Hell.
However it does seem that we'll be seeing Prometheus 2 before Alien 5, as the latter is still working through pre-production with no filming or release dates yet solidified.