First off, the artwork is gorgeous.
I am liking the new layout, and i like the way they handled the sample of aquaman by noting his major variants (harpoon, water thingy hand) on side boxes, making it very easy to switch to any of these versions.
I am also liking the rule changes, i'm particularly glad that they are changing the grapple rules, and changing some feats into "maneuvers", with feats just being an enhancement over it. The new "affliction" effect haves me intrigued, as it could very well become a catch-all for a lot of odd powers, and still remain balanced.
From the sample encounter i can see the game will play out very similar to 2e, which is to say, very good.