Tony Gilroy, who wrote the scripts of the first 3 Bourne movies, will not only write the sceenplay of Bourne 4, but he will also take over the director's seat! Fortunately this won't be his directorial debut, he already helmed two movies: Michael Clayton and Duplicity.
Now that you know Director Paul Greengrass isn't coming back, I guess you're wondering about Actor Matt Damon. Well Tony Gilroy recently talked about his vision for the Bourne Legacy movie:
The easiest way to think of it is an expansion or a reveal…Jason Bourne will not be in this film, but he's very much alive. What happened in the first three films is the trigger for what happens. I’m building a legend and an environment and a wider conspiracy…the world we’re making enhances and advances and invites Jason Bourne's return."
So don't expect Matt Damon to show up in the Bourne Legacy... Who do you think they should cast for the lead role then?
Update: Actor Jeremy Renner is the new lead star of the franchise!