CDPR has switched to UE5, and some of the team's technical solutions will help improve the engine.
Recently, one of the developers noticed changes on GitHub. The release of a new branch of the modern Unreal Engine 5 is expected soon.
TheRedPixel pointed out that the branch for UE 5.7 is already available on GitHub, while the main branch has been updated to 5.8. In this regard, it is assumed that the release of 5.8 may also take place quite soon.
Version UE 5.7 should include the technology that CD Projekt RED showed. Previously, during the presentation of The Witcher 4, the Epic Games teamnoted Nanite Foliage technology, which "provides a fast and memory-efficient way to achieve great density and realism of foliage" - it was then reported that its release was planned in UE 5.7.