With the new Amazon Fire TV, voice becomes the killer feature

On Wednesday, Amazon did what it probably should have done a while ago: It announced a Fire TV that plays 4K HDR video. The new Fire TV costs $70 and begins shipping on October 25. While it's not the first Amazon device to stream in 4K resolution--the now-discontinued Fire TV box has done so since 2015--it's the company's first to play high dynamic range video, whose greater color detail is more noticeable than 4K alone. Although Amazon has included 4K HDR content in its own Prime Video service for two years, it now has the hardware to go with it. But 4K HDR is no standout feature, even at Amazon's low prices.