In addition to the 70-inch set, Vizio also had a prototype 55-inch 3D XVT model that was most impressive.

ENGADGET: Vizio's XVT Ultra HDTVs to bring 4K and glasses-free 3D to the masses, we go eyes-on

Vizio is one to eventually make good on a promise, though, and has just started shipping the first XVT series CinemaWide set.

ENGADGET: Vizio XVT CinemaWide TV goes on sale, 21:9 movie purists celebrate the end of black bars

Speaking of which, the industrial design on the XVT line is understated and premium, with an anodized silver metal band surrounding the edge of the set and minimal branding.

ENGADGET: Vizio's XVT Ultra HDTVs to bring 4K and glasses-free 3D to the masses, we go eyes-on