Your 4K Blu-Ray Player Will Need A Big Update Before Using This New Dolby Feature

Your 4K Blu-Ray Player Will Need A Big Update Before Using This New Dolby Feature Justin Sullivan/Getty Images It's been relatively quiet in the world of 4K UHD Blu-ray players for a few years. Brands like Samsung and LG have doubled down on TV tech, pushing ancillary AV components to the side.