As part of its refreshed 2013 HDTV lineup, Vizio has announced that it's joining the 4K market with three new sets. The XVT series of "Ultra HDTV" screens will on display at CES this week and will be available in 55-, 65-, and 70-inch sizes. The sets all feature LED technology, 3D, and a refresh rate of 240Hz, but unfortunately there aren't any details on when these sets will be available or how much they'll cost when they launch. That said, we're imagining Vizio will try and push the price point down from where most 4K TVs are right now — the company says its planning to bring this "expensive new technology to mainstream consumers." Hopefully by the time these sets debut, there will actually be a little bit of 4K content out there to take advantage of all those pixels. We'll be checking these sets out on the CES show floor to see how they stack up to the 4K competition.