Is this Dynamic Pro doing their take on G Gundam? Looks like it could be cool. Though again, I'm surprised something like this crops up before something new for Great Mazinger.
What's next, a reboot for Groizer or Govarion?
The story about Hiroshi learned this new form of martial arts from his master, and dealt with the Haniwa Genjin by becoming Jeeg.
After the battle Hiroshi was badly hurt, and mysterious people kidnapped his sister, killed his master and took Hiroshi and all Jeeg parts back to their hideout.
Hiroshi got his head transferred to a different person "Ryusaku"'s body. Somehow his blood is now magnetized as well. Hiroshi's master told him that he must once again become Jeeg to fight the new mysterious threat, and to save his sister.