With the 4770K being so hard to OC, the 2500K, 2600K, 2700K, 3570K and 3770K all maintain their value. The SB chips may even be the best solution for OCing because of their design advantage over the IB.
Haswell's design looks like Intel is more concerned about competing in the mobile/tablet markets, and there is little wonder to that: that's where the growth lies.
I wonder how Intel will answer AMD's venture into unified RAM? If AMD is successful in that technology it may make Intel's 3D chip designs second tier. Unifying memory and disposing of multiple rewrite cycles has the potential to blow past 3D designs.