The specs were posted on the game's official Discord channel by CD Projekt Red's junior community specialist Alicja Kozera. The specs are quite powerful but achievable if you have the necessary budget. However, we are still some time away from learning the actual system requirements, so the listed specifications below could change.
CPU: Intel i7-8700K @ 3.70 GHz
MB: ASUS ROG STRIX Z370-I GAMING
RAM: G.Skill Ripjaws V, 2x16GB, 3000MHz, CL15
GPU: GeForce GTX 1080 Ti
SSD: Samsung 960 Pro 512 GB M.2 PCIe
PSU: Corsair SF600 600W