https://wccftech.com/the-witcher-next-game-announced-unreal-engine-5/

While there was little doubt CD Projekt Red would be returning to Geralt of Rivia eventually, today they officially announced the next game in The Witcher series. While details on the game are in short supply at the moment, we do know it will be developed using Unreal Engine 5 as part of a “multiyear partnership” with Epic Games. CD Projekt Red chief technology officer Paweł Zawodny had this to say about the surprising jump to UE5…

One of the core aspects of our internal RED 2.0 Transformation is a much stronger focus on technology, and our cooperation with Epic Games is based on this principle. From the outset, we did not consider a typical licensing arrangement; both we and Epic see this as a long-term, fulfilling tech partnership. It is vital for CD Projekt Red to have the technical direction of our next game decided from the earliest possible phase as; in the past, we spent a lot of resources and energy to evolve and adapt REDengine with every subsequent game release. This cooperation is so exciting, because it will elevate development predictability and efficiency, while simultaneously granting us access to cutting-edge game development tools. I can’t wait for the great games we’re going to create using Unreal Engine 5!