Over a year after leaving Tango Gameworks, Shinji Mikami has seemingly started up the new studio, Kamuy Inc.
Mikami's yet to reveal this himself, but Shadows of the Damned Remastered's website features him in its "creators" tab. Towards the end of his bio blurb, it mentions that he's founded Kamuy.
At time of writing, other details about the studio, such as its headcount or parent company (if any), is unknown.