For what it's worth, here's Andy Davidson, the man behind the concept of a Worms game and proud owner of the primordial Concrete Donkey, defending the new game and the new Team17:
http://neogaf.com/forum/showthread.php?p=36527234#post36527234I don't think I'm quite ready to form an opinion yet because from the few brief scenes in the trailer, the in-game footage seems pretty raw and the game unfinished. But then again, it's only like half a year from release and new engine or not, those physics don't exactly seem to have changed drastically since Reloaded. Map shapes and sizes look about the same too, not to mention the four worm limit is still apparently there. Derp.
If Andy Davidson really did have a say during development, the above as well as the less cartoony graphical style sort of make sense, though, since he's known to prefer the look and feel of the first generation games. In that forum thread, he also hints that WA is actually "missing half the game" and that could very well mean that they're putting a real-time mode into Worms Revolution... or some more advanced physics for terrain and other objects to go with that dynamic water. But these are just my personal predictions.