The first commercial network television broadcast in color in the United States occurred over the CBS field-sequential colorOffsite Link television system on June 25, 1951, when a musical variety special titled PremiereOffsite Link was shown over a network of five East Coast CBS affiliates. Viewing was highly restricted as the program could not be seen on black-and-white sets, and VarietyOffsite Link estimated that only thirty prototype color receivers were available in the New York area.
I would imagine that we would’ve reached our limit on visual technology. The next step would be to integrate our other senses, like a haptic vest to feel the action in movies or something like that.