Can only hope but why else would they do this. You would think this points to a new rotary powered vehicle coming soon.

 

My Japanese isn't that good, so google translate will have to suffice. Taken from the youtube description:

"Half a century has passed since Cosmo Sport with a rotary engine was introduced to the world and a new page in the history of the car, but the story of Mazda and Rotary is not over. Mazda would not have existed without the rotary engine, and without the Mazda, the rotary engine would not have been produced for nearly 50 years. Fifty years ago, Mazda engineers brought the commercial success to the unique engine design concept devised by Felix Bankel."

Would I like it to be a hint of a new rotary powered car? Absolutely. I think many people would. However, this could simply be more promotion for a range extender, etc. It does seem to confirm something rotary related is still continuing, though.

 

Looks like just an anniversary video.

 

Video is about 2 years old.