Kamen Rider Fourze 2nd Rider Rumors

We are just only on the third episode but it doesn't stop the new rumors about Kamen Rider Fourze's 2nd rider, tentatively called “Kamen Rider Meteor!” Furthermore, some information about Movie Wars MEGAMAX.
Please take rumors with a grain of salt!
The first alien Kamen Rider, Kamen Rider Meteor will debut in Movie War. "Gray", from Mars, is the one chosen by "Meteor" and appears in Amanogawa High as a transfer student. He warns Gentaro about a “Great Space War.”
Gentaro tries to gather the Riders from the legends for that war. Original past Riders will appear, but they'll be voice-only participation due to the difficulty in gathering the cast. The Riders resonate with Fourze and he gains a new form.
Kamen Rider Fourze's "extra Large friendship project" starts (with the movie).
Update: Apparently, there will be a festival called "天高祭" (Sky High Festival) going on in Amanogawa high during Fourze's Movie Wars MEGAMAX story. The set is ready and apparently the staff working there confirmed that it's for the movie.