A Videocardz report indicates that NVIDIA's upcoming CMP (cryptocurrency mining processors) will be variants on last-gen Turing parts. The CMP 40HX will be based on TU106, while the CMP 30HX will use the same TU116 GPU found in the GeForce GTX 1660 Super. However, CMP 50HX and CMP 90HX look like they could be built on Ampere.

https://www.notebookcheck.net/Some-of-NVIDIA-s-CMP-mining-chips-will-leverage-the-12nm-Turing-architecture-however-specs-indicate-that-CMP-50HX-and-CMP-90HX-could-put-supply-pressure-on-Ampere-gaming-cards.524455.0.html