The second image says 'Sarikotha Aarambham', or 'an Exciting Beginning'. Certainly the two HD channels will officially be launched at this time. However it is surprising that no DTH has any addition information.
Similarly, on 13 August 2015, Asianet HD was launched at 6pm, but Tata Sky added it only on 22 August, followed by other DTHs. The interesting thing is that there was no news of Asianet HD testing on the satellite and no pictures (testing or otherwise) until Tata Sky added it.