Shinichiro Shirakura who previously produced Super Hero Taisen has just confirmed via his Twitter account that he will also produce the second Super Hero Taisen movie tentatively called "Super Hero Taisen 2".
The producer also hints that the 2nd movie doesn't exactly continue were the first one left off, hinting that this will be something new and different.
It was previously reported that other heroes created by Shotaro Ishinomori will appear in the movie, which includes the movie versions of the Space Ironmen Kyodain. In addition, Space Sheriff Gavan typeG will also appear in the movie.
Source: Henshin Justice