Kamen Rider Build Gashat will be as campaign item:

https://scontent-sit4-1.xx.fbcdn.net...cc&oe=5A34FBF6

Hmm....maybe Ex-Aid will be has his own Legend Rider Gashat. Maybe Ex-Aid's Legend Rider Gashat is Genius Gamer Ex-Aid Gashat.

We knew it'd be a campaign item from Build's toy catalogue; but yeah, following last year's precedent, I'd assume Ex-Aid's legend rider gashat would be released via the True Ending DVD/Blu-ray

Just caught the newest episode and it looks like a new Gashat was shown in the preview for next weeks episode, the Mighty Doctor X Gashat does anyone know if this is going to be in the toyline, I haven't seen any scans or other info about it so probably this question is a week too early
also does anyone know whose in the Build Gashat Campaign? CSToys are for sure, not sure about HLJ given the state of their Build page at the moment

Doctor Mighty XX, you mean? Nope, not currently known to be released at all.

Yeah that one I couldn't quite make out the name so thanks for the correction :) shame about the no release though

DX Mighty Creator VRX Gashat:

https://www.youtube.com/watch?v=a3ZL90hfyCU

DX Hurricane Ninja Gashat:

https://www.youtube.com/watch?v=gND7uRrdO3M

I'd be willing to bet Doctor Mighty XX will be available on Premium Bandai at some point in the near future.

Wasn't expecting Mighty Creator VRX to have the Kamen Rider Chronicle voice, wonder what that's about?

http://i.imgur.com/1p64W6D.png
http://i.imgur.com/INdXVJJ.png
http://i.imgur.com/CLz10fi.png

Does Ex-Aid combine with Lazer to for Muteki?

Contact your middle man, everyone!

DX Doctor Mighty XX
http://p-bandai.jp/item/item-1000116830/

That's Genm, not Ex-Aid. You can tell because it's purple, and has the Dangerous Zombie additions.