Bandai Namco is expected to reveal the next SoulCalibur VI character soon, but a new video went up earlier than expected at NicoNico (which has since then been removed) that reveals the next playable character is Taki the kodachi-wielding fighter. [Thanks, Avoiding the Puddle.]
We’ll have more details available when Bandai Namco makes the official announcement.
SoulCalibur VI releases in 2018 for PlayStation 4, Xbox One, and PC.