is there something similar to the metadata AW offers or even better to the solution regarding feed updates WG offers?

it would be nice if we (the affiliates) could know when a feeds has been updated and proceed accordingly.

from what i understand from the affiliate admin panel on DGM (on datafeed section) you almost update all feeds daily but not all, and this will save yourself as well valuable (i believe) resources as well as us (the affiliates)