Sony upstaged most during its press event last night by announcing a Ultra HD 56-inch OLED, but if you thought there wouldn't be competitors, you're mistaken. At the CES day one opening Keynote, Panasonic showed off its very thin (about a half inch thick) 56-inch Ultra HDTV OLED. Like Sony's there's no price or availability, but we suspect it'll still fall into the, if-you-have-to-ask category. Filed under: Displays, Home Entertainment,