The bird in the author's notes of Volume 111 looks similar to the one in Chapter 1036's color spread. Maybe we'll get a big Bushido moment of Zoro protecting someone in this arc. The color spread features a snowy environment, so it could be a moment that happens in the Underworld.
I could see 'Warrior of Death' being used as his warrior-titled chapter, especially with the unexplained Grim Reaper appearance from Wano. 'Warrior of Soul' also seems possible since Ryuma was said to possess the greatest warrior soul.