They registered the title Genso Suikoden here in America this week. I wonder if they're planning something new. They registered Tierkreis's title before it was announced. Maybe we'll have a new game announced in a few months.
http://tarr.uspto.gov/servlet/tarr?regser=serial&entry=77765442
http://tarr.uspto.gov/servlet/tarr?regser=serial&entry=77765442