With Five Nights At Freddy’s 1, 2 and 3 already confirmed for a Switch release a few days ago, it was only a matter of time before the 4th one was going to join them. As expected, listings for a Switch version of Five Nights At Freddy’s 4 have appeared on the European and Australian versions of the Nintendo Switch eShop. As of this post’s writing, there is no North American eShop listing. However, the game is slated for a release on November 29th, the same day as the release of its 3 predecessors, on the listings that do exist.
Source: Nintendo Switch eShop