Current Blu-ray players can only play 1080p content, which is going to be a big issue as TVs increasingly move toward 4K. Fortunately, the Blu-ray standard is being updated to support 4K, and now Panasonic is announcing that it's the first company to develop a player that supports it. Panasonic showed a prototype of its UHD Blu-ray player at a press conference in Las Vegas this morning. So far, there's very little detail on it, including when you'll actually be able to use it. Previously, it's been suggested that 4K Blu-ray players may hit stores by the end of 2015. It's clear that Panasonic's Blu-ray player needs more work, too: as far as we could tell, it doesn't even have a disc drive yet.