User blog comment:B214/Season 3 confirmed!!!!!!/@comment-76.109.26.131-20141226174333/@comment-24502975-20141227173946

I don't see anything mechanical in the picture of that Dragon; the only potential semblance to JD is the open-chest area where Longinus Smasher would come out, but that's nowhere near how it actually looks like anyway.

As for the PV, I think it was actually very useful. Putting aside my own extreme joy at Rossweisse being animated PERFECTLY (in the 3 close-ups we got), it's because of the PV we found out that there's going to be more relationship development between Ise and Rias in BorN (otherwise Ishibumi probably wouldn't have mentioned it on his blog yet).