So it seems, the makers are remastering the movie in its cropped anamorphic ratio (2.35:1), instead of the original aspect ratio of 1.37:1 on its 35mm negative
(Remember Sholay was shot on 35mm only, not on 70mm as speculated! 70mm was just its blow up version only.)
Sholay (1975) - Technical Specifications - IMDb
This ratio is same which was earlier released on DVD and also runs on ZeeCinemaHD channel now a days.
I would have loved to see Sholay in its original ratio, as one can clearly observe there is lesser of picture on top and bottom of this anamorphic version!!