From a functional standpoint I have a feeling the new wrangler and defender are going to be quite similar. Somewhat long-travel 4-wheel independent unibodies. I think they'll be cool, but at that point I'd be seriously comparing them to side-by-sides.
The bigger question I have is the new 4Runner, and what's going to replace the FJ Cruiser (I know there's already a thread on this but it's related).. I think the most provoking scenario is if Toyota drops the 4Runner altogether and introduces rebadged 2-door and 4-door Prado's. That or we finally get the 70-series, it'd be the only solid axle'd SUV in America.