Finally! Some concrete news on Prometheus 2, the highly anticipated sequel to Ridley Scott's 2012 sci-fi thriller which set out to expand the Alien universe and explain mankind's beginnings has hit the web! Sott's latest sci-fi film, The Martian lands this November and after a month's rest, he will be right back to the director's chair in January to begin shooting Prometheus 2!
Forum member Midnightexpress posted this scan from the latest issue of Total Film in the Prometheus sequel forum, which reveals the January start date:

Big things have small beginnings... Expect lots more info on Prometheus 2 in the coming months as we near the end of 2015. Keep your browsers locked to Scified.com and Prometheus2-Movie.com for the latest scoops on the upcoming Prometheus sequel!
Prometheus 2 will not be affected by Neill Blomkamp's Alien 5, which is currently also in production! Ridley Scott will be executive producing that film as well to ensure plot details do not contradict anything found in Prometheus 2.
The plot for Prometheus 2 is currently unknown.