https://www.toei-video.co.jp/special/changerion/

They're doing a Changerion event this November because of the Bluray release, and next year is the 30th anniversary.
Hagino, Aizawa, Inoue and Shirakura are the guests.

The event's name is "Event!! Now?" referencing the first episode title (Hero!! Me?)

started to think Changerion 30th is the non-Rider/Sentai tokusatsu movie that secretly being filmed