In an interview with Gamepro:
Having worked on Xbox 360, from a technology standpoint, how much more do you think the system can be pushed with future games?
"I think there's plenty of room to push and experiment when it comes to physics and AI and real-time lighting. I think we've only scratched the surface of what we can do with gameplay as well as the 360. There's far more potential down the road to do more stuff. As amazing as I think Gears is, and my gut tells me I still love playing it, I think we have a really incredible experience; I think we'll definitely push it further if we get around to dong a new version in the future."
Read the full interview