This board will definitely support the 1151 Xeons, but I don't think you'll be able to OC a Xeon on it.
You can install a 6600K or 6700K and OC those, but as far as I can tell from all the press releases/advertising media I've seen, the non-Z OC is for the RAM, not the CPU.
I'm happy to stand corrected if I'm wrong though!