The processor was the Socket 2011-3 Haswell EP or Xeon E5 v3 and features 14 cores, a 35 MB cache, twin 9.6 GT/s QPI channels, and support for quad channel DDR4-2133 memory. This means that the Intel’s Haswell Xeons have already reached at least the QS phase.
The chip is still at least a year from commercial announcement, and the Ivy Bridge EP chips will only be arriving this summer. This means that selected customers may be receiving fully working ES versions by the end of the year.