The second-gen Threadripper series flagship will offer 32 cores and 64 threads. It remains on the TR4 socket and will be launched in Q3 2018. It's based on the Zen+ design and will be fabbed on the GlobalFoundries 12nm process.
AMD delivered the first public demonstration of 2nd Generation AMD Ryzen Threadripper processors—the second AMD 12nm product family—featuring up to 32 cores and 64 threads. 2nd Gen Ryzen Threadripper processors are scheduled to launch in Q3 2018 with outstanding performance expected in rendering, post production, and encoding workloads.
AMD also showed a prototype of a 7nm EPYC processor. Sampling of these chips begins in the second half of this year, with availability expected in 2019. Basically, AMD will not be offering Zen+ for the server market, it's leaping straight to Zen 2. Not great for Intel, which remains stuck on 14nm.