In India even if you buy a HDTV its not much of use other than hooking your gaming consoles to play in HD. None of the broadcasters do HDTV at the moment.
Hopefully DTH providers will soon provide HD dishes and set top boxes. Cable providers are hopeless in deploying the current broadcasts so HD is out of question.
But researchers are already developing Super Hi-Vision which they claim will be 16 times more sharper and detailed than current HD.