From 26 October, sellers offering free postage on item listings will automatically receive a 5-star rating on their postage cost detailed seller rating (DSR) for that listing.
This important new change for sellers will ensure that the postage cost DSR will automatically default to 5 stars for successful listings where buyers choose free postage.
about time this happened ... not that I use free postage myself , but I have heard of sellers whinging about getting less than 5 stars on free postage items , so this should please them