Matt and Julia Stiles are now in Tenerife preparing for the start of Bourne 5 filming - details available here. Vincent Cassel has been added to the cast as one of the villains.
Interviews: Matt talks to Space.com, and Andy Weir speaks at Lawrence Livermore Lab. The Martian was third in a survey of the most anticipated fall movies. And a CNN report from the JPL day mentions the chemistry between Matt and Ridley Scott.