Den of Geek among others reports that the sequel to Blade Runner is now written and also “damn good” according to Sir Ridley Scott. The sequel is written by old Blade Runner script writer Hampton Fancher (together with Michael Green). Harrison Ford seems to be involved in the story of the current script, it’s not clear exactly how.
Ridley Scott has two more Sci-Fi movies comming in the future. The Martian (based on the novel of the same name by Andy Weir) which will star a stranded Matt Damon on Mars is currently scheduled to come out in the autumn of 2015.
Then there’s Prometheus 2 which also has its script written. The release date was recently pushed back a year (it’s now set to debut on the 4th March 2016).