Mazda has just released the above teaser of the upcoming ND MX-5.
Unsurprisingly, there's not much we can guess from it, except that it will retain the flared wheelarches of the NC (see below), and that the front wheels seem to be a bit further away from the cabin, which is consistent with earlier spyshots of elongated wheelbase NC's lapping the ring.
In addition, The Motor Report just published pictures of a camouflaged MX-5 on the road in Japan. Again, not much to be guessed apart from a slightly higher trunk, and a sloped front end (probably because of pedestrian safety requirements)
The ND Miata will be released on 9/3/14, so in any case we'll know all the specifics then.
Thanks to leblogauto.com for the info. Original article here.