The LGA 2011 is going to be the replacement for the Intel's high performance CPUs, the i7-900s (think 6-core CPUs etc.). It's going to be for those who need the extra power to do hardcore 3D rendering, photo/video editing, and computational math, not for gaming.
Right now the i5-2500K is the best gaming chip on the market, and there's not much else that gamers will benefit from with the 2011 socket. I'd say go for the i5-2500K and throw in a good 3rd Gen SSD like the OCZ Vertex 3 or Intel 510. You'd see a much better experience with that than with the 2011 chipset.