To the TV buzzwords OLED, 4K and Ultra HD, you can now add the humble word curve. All of these options will be available to TV buyers this spring and summer. Manufacturers like Samsung are betting that youll pay a lot more for a slightly curving TV screen. Some of the most valuable works of furniture produced for the art market are based on the curve, said James Zemaitis, new head of Sothebys 20th Century Design Department, reading from a teleprompter at an event this week unveiling Samsungs new curved HD and 4K UHD TVs.