User blog comment:Lia Schiffer/Anime Special: 293: Hitsugaya, Enraged! Blade of Hatred!/@comment-1351982-20101023050848/@comment-1248963-20101023072632

The trailer only shows like the Final Ichigo vs Ulquiorra was reanimated or something like that. I don't foresee Ulquiorra will be part of the plot per say, maybe some sort of cameo or appearing in a flashback, but I find it unlikely that his participation will be anything more than that.