https://twitter.com/operahouseinfo/s...48718295019520
Recently, the prototype for Mad Stalker, a mech game which was released for the X68000 computer and ported to the Mega Drive (but never released), was found. According to the above post (cred to PlutieDev (Sik) for re-tweeting), it seems like Columbus Circle (Gleylancer, Ultracore and that rhythm game) will announce something about it next week.
More info here:
https://en.wikipedia.org/wiki/Mad_St...ll_Metal_Forth