Aside from Shadows of the Damned, Shinji Mikami is developing another game with his own studio, Tango Gameworks. Mikami hasn’t said much about the project, but a posted photo of environment designer Eirou Yoshii may have given us a glimpse of it.
Some kind of circular object (maybe a well?) and dead trees?
Yoshii appears to be an ex-Capcom employee. His previous titles include Devil May Cry, Resident Evil 4, and Monster Hunter Tri.