Does anyone know if julia stiles in matt damonds new love interest in the new bourne movie?

Answer 1

The chick from The Bourne Identity (1) died in The Bourne Supremacy (2).

Answer 2

I don't have a clue from what I have seen on the web. Doesn't seem likely.
Here's a sysnopsis of the new movie:

Rogue agent Jason Bourne (Matt Damon) continues to be hunted by the very people at CIA that transformed him into a killer. Still suffering from amnesia and determined to finally discover his true identity, Bourne is lured out of hiding to make contact with a journalist named Simon Ross (Paddy Considine), who has been following his story. Throughout his research, Ross has gathered up valuable information about Bourne and Treadstone, the organization that trained him. That’s rather inconvenient for Noah Vosen (David Strathairn), who is looking to start up a new organization under the codename Blackbriar to follow in Treadstone’s footsteps. With intent to kill Bourne and the journalist before they expose the program’s disturbing secrets, he sends agent Pam Landy (Joan Allen) to lead the search effort. Simultaneously, Paz (Edgar Ramirez), one of the remaining few living Treadstone assassins, is dispatched to take both Bourne and Ross out. In order to finally learn of his true origins and find some inner peace, Bourne will have to evade, outsmart, and outmaneuver the deadliest group of highly-trained killers yet.

Answer 3

She's not his love interest but someone that he worked with on a prior mission. His love interest is still the chick from the first Bourne movie.