PCMag explains Ultra HD (formerly known as 4K), what it is, when it's coming and whether you need it. Writes Jamie Lendino, "Is 4K—now known officially as Ultra HD—something you can get today, or at least soon enough that you should hold off on buying, say, an HDTV or Blu-ray player? Is it something you'd even want? Here's everything you need to know about Ultra HD—for now, at least."
Read his full piece here.