The foliage looks much more improved. The tress especially don't look like MSpaint smudged mush anymore lol
Yeah, it almost looks like things weren't even rendering properly before hand. Which, might just be due to them not sorting out their LOD solutions on the consoles yet or it might just be fine tuning optimizations. One of the things I mentioned a long time ago about the performance on consoles was that this work would happen towards the end of the development which proves to be true.
The foliage looks a lot better, just look at the trees and they look completely different as you mention. And, like I mentioned, the fact that texture resolution appears to be the same says this isn't some jump in processing power but just optimizations which says that this isn't the newer Xbox console build or something ridiculous, this is truly what the Xbox will look like and likely even better by release.