Lenovo has brought its first-gen eGPU to CES 2020. The BoostStation is part of the Legion line-up, and accomodates cards such as those of the NVIDIA GeForce 20-series and Radeon RXs. It also supports Thunderbolt 3 and 100-watt (W) power delivery for a connected PC.
https://www.notebookcheck.net/Lenovo-introduces-its-first-ever-external-GPU.449009.0.html