I believe Superpumps have always been up rated as far as I know. And the split between up rated and full rated for in-ground pools is about 50/50. Nearly every IG pump line has an up rated version and some pump lines have only up rated versions. Few pump lines, if any, have only full rated so the full rated versions are probably more rare although I think I see about 50/50 on the forums.

Also, AG pools are nearly always up rated and sometimes double up rated.