Koei Tecmo has announced that Dynasty Warriors 8: Xtreme Legends Complete Edition DX is coming to Nintendo Switch. This is an updated version of the original Dynasty Warriors 8 that came out on PC and PlayStation 4 in 2013 and later on PlayStation 4 in 2014. The new version will come packed with all of the available DLC.
At the current moment, the Japanese edition and site are all that we know about. That edition will launch on December 27th. We don't know anything about a release in any other region at the moment, but it is very likely that the game will be headed westward as well.
In the meantime, you can tool around the official site (in Japanese) for images and more.
DYNASTY WARRIORS 8 is a historical tactical action game that follows the stories of the kingdoms of Wei, Wu, Shu and Jin through the actions of historical military and political figures of the time as they fight to gain control over the Three Kingdoms of China. It features more than 40 completely new stages: verdant plains, desolate wastelands, sharp ravines, huge castles, and other breath-taking sites, giving stronger emphasis in the stage of these epic battles and inspired by ancient landscapes.