Do yourself a favor: go to the SW end of "scar of the worldbreaker" in Badlands and talk to Theldurin the Lost. It's a quick little chain quest and it's HILARIOUS.
I just spent about 3 hours doing nothing but running around the Eastern Kingdoms in an excited tizzy looking at the new terrain.
I'm pleased to say that Ashenvale is still there. There are some changes, but it's still pretty. Hooray!
In fact, my worst fears have been laid to rest. There's still plenty of beautiful scenery to see.
Lots of changes and it'll take some getting used to; I've been playing this game for almost two years.