Booboo Stewart who plays Seth Clearwater in Eclipse, answered questions from fans while at an MDA event in Tucson. And of course it wasn't long, before he was asked about working with Rob, Taylor and Kristen:
Last December CGSociety published an excellent article, on how the wolves were created for New Moon. We only assume the ones for Eclipse will rival them. And by the trailer screenshots it certainly looks that way.
And as @EyesOfAmberBlog pointed out, Seth actually hangs out with Edward in Breaking Dawn, so Booboo.. your days of not working with Rob are numbered!