Sable's Grimoire: A Dragon's Treasure has finally hit the threshold required for trading cards and such to be enabled. They weren't quite approved in time for the start of the sale, but better late than never.
Unfortunately, Man And Elf still doesn't qualify for trading cards and such. They will be added if/when the game finally does qualify.
As a side note, the achievement images for A Dragon's Treasure have also been updated. Nowadays, Steam allows achievement images of up to 256px (up from 64px), so I've replaced them all with higher res versions.