4K Roku TVs start shipping, but the screens are small

After launching a 4K streaming box last year, Roku is loading its operating system onto 4K UltraHD smart TVs. Best Buy’s Insignia brand will be the first to offer 4K UltraHD Roku TVs, with a 43-inch TV for $400 and a 50-inch set for $500. Both models are available to purchase from BestBuy.com, with in-store