Elbaph is the most likely arc in which Zoro receives his warrior-titled chapter. After all, it's the Warland Kingdom, home to legendary warriors. I think his chapter title will be "Warrior of Soul." In Monsters, Ryuma was said to possess the greatest warrior soul (or heart) of his era, and the concept was mentioned multiple times, including on the final page. It's tied to his code of Bushido. This title would also thematically fit Zoro's demon-hell-themed abilities. Both Luffy and Sanji had warrior-titled chapters in Wano that reflected their latent awakenings. The same should apply for Zoro, so I'm thinking it'll be an awakening of Black Blade(s).
You can see Oda is very consistent in how he writes Zoro and the swordsmen code:
You can see Oda is very consistent in how he writes Zoro and the swordsmen code:

if oda didnt give it to oden who was yonko level then i cant see zoro having black blade this arc
oda will focus zoro mastering coc to high level and awakening Future sight