No. He’s fighting against an MMA guy on October 28 and he said he wants to fight another one after that. He also looks about 22 stone and is out of shape. Anyway Usyk has to defend against his mandatory challenger Filip Hrgovic next instead.
It was supposed to happen on December 26 though. Apparently Anthony Joshua is fighting on December 23 now instead, but not against Deontay Wilder.