No opponent for Fedor Emelianenko announced at Rizin FF introductory press conference

We found out a name. Just not the one everyone was anticipating.
Former PRIDE boss Nobuyui Sakakibara introduced his brand new MMA promotion at a press conference in Tokyo on Thursday. But there was no announcement regarding the opponent for Fedor Emelianenko in the main event on New Year's Eve, though it was promised in a press release.
The new promotion will be called Rizin Fighting Federation and the two-night event in December will be entitled the Rizin Fighting World Grand Prix 2015. T