Yes, Sega and developer Ryu Ga Gotoku Studio have finally lifted the lid on the next Yakuza entry, Yakuza 7. And, yes, the combat is transitioning to include turn-based features. Is it strange" Probably, but so is pretty much everything else in the long-running series.
See Yakuza 7?s nearly five-minute long teaser trailer in the video down below:

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