Touma will use the new Seiken on his Seiken Swordriver to transform into Kamen Rider Cross Saber. It's not clear if he is also using a new Wonder Ride Book or it is just Brave Dragon.
The Seiken is called as HaouKen Toseiba (Blade King-Sword-Ten Holy Blades). The Red Sun like symbol on the Toseiba (TO-SABER?) can be moved up and down pretty much in similar fashion as Kamen Rider Kiva's Zanvat Sword. The moving up & down process might light up the sword.
He will use this form to fight against Kamen Rider Solomon and later also with a Megid with the help of Blades.
We also see the return of Espada. But we also have Calibur in the line. So the new Espada is Mei? Ren / Kenzan also joins the Touma troupe.