While we just found out some details on the upcoming Broadwell-E platform, including the flagship Core i7-6950X and Core i7-6900K SKUs, there is some more exciting stuff for the Xeon family of processors.
The Broadwell-EP update will arrive in Q1 2016, with the new Xeon E5-2600 v4 processor featuring up to 22 CPU cores, with 44 threads thanks to HyperThreading technology. Intel's new Xeon E5-2600 v4 processors will boast up to 55MB of L3 cache, and have TDPs of up to 145W. The new Xeon processors will be slotted into the Grantley family, with quad-channel DDR4 support to boot.
Over the next few years, we'll see the new Skylake-EP and Skylake-EX processors from Intel, with the Xeon CPUs featuring up to 56 and 64 CPU threads. From there, in 2018 we can expect the Cannonlake-EP and Cannonlake-EX processors to really hit their stride, being made on the incredibly small 10nm process on the new Socket P platform. These processors should rock up to 68 or more CPU threads and have between 80-85MB of L3 cache. Exciting times.