It's Confirmed! Kamen Rider Saber & Kikai Sentai Zenkaiger's Summer Movie will be a crossover movie. It's officially titled as "Kamen Rider Saber + Kikai Sentai Zenkaiger: Super Hero Senki". The movie will release on July 22.
Official Website: http://movie-rider50-ranger45.com/ (available from tomorrow after the official announcement)