Well look what the Internet turned up. On a Comcast support page, the cable operator is now referencing an Arris XG4 DVR set-top, available in select markets only. The specs on the page don’t advertise it, but multiple sources have told Light Reading that the product is a set-top that supports 4K Ultra HD and High Dynamic Range (HDR) video. And it may be Comcast’s first 4K box on the market.

Source: Comcast Appears to Soft Launch First 4K DVR | Light Reading

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