The two new SKUs were promised back when the 2nd generation Ryzen Threadripper lineup launch and will be joining the currently available flagship 32-core/64-thread Thredripper 2990WX and the 16-core/32-thread Threadripper 2950X.
The Threadripper 2970WX should have the same 250W TDP as the flagship 2990WX, pack 24-cores and 48-threads, and work at 3.0GHz base and 4.2GHz Turbo clocks.
The Ryzen Threadripper 2920X should be the cheapest Threaripper in the lineup, not counting the first generation, pack 12-core and 24-threads, and work at 3.5GHz base and 4.3GHz Turbo clocks. It also has the same 180W TDP as the 16-core 2950X.
Unfortunately, it also appears that the 2920X will remain the cheapest Threadripper as there is no word from AMD regarding any SKU that could replace the 8-core/16-thread Threaripper 1900X, which launched at $549.
Both the Ryzen Threadripper 2970WX and the 2920X should be available as of October 29th, with a suggested price of $1,299 and $649, respectively.
The 2nd Gen Ryzen Threadripper family is growing! We’re pleased to announce the @AMDRyzen Threadripper 2970WX and 2920X processors will be available worldwide on October 29, 2018. pic.twitter.com/OD9rKnuhkc— AMD UK (@AMD_UK) October 9, 2018