Is anyone surprised that a company in Poland would cut ties with a group in Russia?
http://www.nintendoworldreport.com/news/60173/new-witcher-3-switch-content-delayed-indefinitely-due-to-russian-invasion-of-ukraine
As sanctions against the Russian Federation for their invasion of Ukraine continue, so too do changes to game development.
In a statement today, CD Projekt Red announced that development of the PlayStation 5 and Xbox Series versions of The Witcher 3 - which would have also included new content for existing versions, including the Switch one - was being brought in-house and the release would be delayed indefinitely. Although not explicitly stated, the work was being done at a branch of Saber Interactive (who also developed the Switch port) located in Russia.
The targeted release date of the PS5/Xbox Series versions was before the end of June ("Q2"), with the content for the Switch release coming later.