AMD has unveiled Threadripper, a 16-core, 32-thread CPU that will take on Intel in one of its key markets: high-end desktop CPUs. The chip has been rumored for a while now, but AMD finally unveiled it at its analyst day, saying it would arrive by summer of 2017. The company may have wanted to get the launch in ahead of Intel, which will reportedly unveil a long-rumored 12-core Core i9 chip and new X99 HEDT (high-end desktop) platform sometime soon.
Source: AMD, AMD Product Map (PDF)