Deutsche Telekom has launched its first 4K set top via the operator’s TDG Group subsidiary in Germany, powered by the Zenterio OS which has become one of DT’s favorite software suppliers. But the elephant in the room is why has it taken the German giant so long to get 4K hardware out to its pay TV subscriber base? Over in the US, Comcast launched its first 4K-capable DVR earlier this year and was mocked for being late to the party. Concerns about the added strain that additional features will have on its network has meant Comcast is often late to launch with new viewing formats and functionalities, while DT prides itself on trend-setting moves, particularly in its US operations. Rivals…