Everyone understands this as Shutdown but channel isn't shutting down as per this scroll it says in compliance with TRAI tarrif order the channel is being discontinued.
I understand this as licensing issue ie no seperate license for SD & HD feed as well as channel pricing issue suffered by Broadcaster as alarcate cost of this channel is out of bounds in comparison with new Tarrif order.
I came to this conclusion by comparing the licensing issue being faced by Jaya TV HD in the wake of Trai tarrif order implementation and subsequent removal of the channel getting by local digital cable operators while Downscaled SD feed of the channel still continues.
If Both this paradoxical issues were somehow sorted out in the future D Sports HD might be back.