Reason could be two -
First can b that Tata Play is enabling 3rd tuner on Transfer + / DVR boxes and as Super LNB can carry 2 frequency signals thru single wire and using splitter 3 frequencies cannot b received in box hence Sat CR LNB being introduced which will support this feature. Single wire would come from LNB and split into three.
Another reason can b that GSat 24 has both Vertical and Horizontal transponders thus under new situation LNB would need to carry all 3 polarities in one wire and Super LNB won't b supporting this feature thru single wire thus Sat CR LNB being given.
If 1st case is true then only those having boxes with 3 tuners would get upgrade while for 2nd case all DVR subscribers will get the upgrade