Well while still being not clear about the Kamen Rider Saber the Movie & Kamen Rider Zero-One the Movie being the part of same movie?, Title of the movie? and many other things... avex had announced the Theme Songs & Artists for both the movies.
Kamen Rider Zero-One's Opening Song Singers → J × Takanori Nishikawa are going perform the theme song of Kamen Rider Zero-One the Movie. The Title of the Song is "A.I. ∴ All Imagination". But for Movie, movie edited version will be used which is titled as "A.I. ∴ All Imagination Type-02".
When it comes to Kamen Rider Saber the Movie, Tokyo Ska Paradise Orchestra feat. Yoohei Kawakami are going to perform "Taju Roko feat. Yoohei Kawakami" (Multiple Exposure). Movie edit will be titled as "Taju Roko feat. Yoohei Kawakami (Movie Edit).
Both the movie edits versions will be available on Spotify, Apple Music and other digital apps from December 18th, the same day as the release of the movie.
That's not all!
Tokyo Ska Paradise Orchestra's "ALMIGHTY ~Kamen no Yakusoku feat. Yoohei Kawakami" Single gets 5 different Jacket Cover with all featuring Kamen Riders.
This single is releasing on December 23rd.