Hampton Fancher, author of the original Blade Runner script based off of Phillip K. Dicks short story, Do Androids Dream Of Electric Sheep?, is in talks to return to write the sequel.
It was said that it will infact be a sequel and take place some years after the first. Ridley Scott has said this was intended to be a series of films.
Now before you go all “THIS MOVIE DOESN’T NEED A SEQUEL!” I would like to direct you to the three official “authorized by Phillips K Dicks Estate” sequel novels.
Blade Runner 2: Edge of Human
Blade Runner 3: Replicant Night
Blade Runner 4: Eye and Talon