the conclusion is, Every DTH not putting their money in all segment and some have internal settings with Broadcaster which they use against competitors timely n deliberately by putting more money quite often.
I doubt, while pushing every new Single HD on certain dth, Broadcasters-DTH make some deal of Not providing that HD on other dth for certain 'n days' duration.
we can consider recent all HD channels added by Dish.
Also SWP HD 1st made appearance on TS and got delayed on d2h by 7 days.for dish it took more days.