According to advertisements of DishTV its possible. So i exchanged with new DishtruHD+ last month, and DishTV automatically activated HD addon along with SD pack and they insisted me to take HD addon for the first month. (125 rupees extra). Made lot of calls to CC, and wrote mails to nodal officer also. :wall :wall :wall
But no use. Everybody told the same thing that for the first month its mandatory.
DishTV assured that from 2nd month onwards i can choose only SD packs.
So i am just waiting for 2 more weeks.