I looked around but didn't see this posted anywhere. While this is hardly a "major redesign" like they say in this article (I can't find any significant differences besides the dual exhaust), they do mention that there will be a displacement bump to 2.5 liters.
http://www.edmunds.com/insideline/do/News/articleId=122903
http://www.edmunds.com/insideline/do/News/articleId=122903