Slimmer and lighter.
I was, optimistically, hoping the new iPad would be slimmer and lighter than my iPad2 (lighter preferably). But, alas, it's supposedly a touch heavier.
The iPad does suffer from a slight lack of portability in some circumstances. I was almost tempted to get the 8.9 new Samsung tab as it's nice and light.
I said something similar in another thread. I feel like there is a market for an iPad "mini," if that ever comes to fruition. It would be the Macbook Air 11" of iPads, so to speak.