Via JapaneseNintendo, source is a recruitment websiteAn undisclosed Tokyo video game company are recruiting for a '3D Fighting Action Game' for Nintendo Switch with development until February 2019. The game will be multi-platform (PS4, Xbox One, Steam and Switch).
Sounds likely that it's another game from Bamco (arena game...) given the multiplat aspect and the genre, but who knows, one can hope for Virtua Fighter 6...