Rose is confirmed to be playable. Not only that, but she has the ability to use Kamui. (The fusion pictured is with Mikleo.)
The four new characters on the scan are members of the guild called The Wings of Sekirei (lit: it’s the Wagtail’s Feathers, The Wings of Wagtail, etc.)
From left to right they are: An Tolme* (CV: Yuuki Kaji), An Phill* (CV: Ami Koshimuzu, Aiguille (CV: Yasunori Masutani), and Roche (CV: Mitsuru Miyamoto)
*An Tolme could possibly be named after a french dessert, Entremets. The same is a possibility with An Phill but I’m not getting any results with her kana aside from “Unfil”.