WhatsApp users who in 2016 opted out of sharing data with third parties are now being asked by Facebook to either accept a privacy policy that states their metadata can be shared with third parties or stop chatting with friends and family through their app.

A poster bellow in this thread quoted a Wired article where some FB representative says they will "honor" the opt-out, yet this is not stated anywhere in the privacy policy as far as I can tell. I think it would be trivial for Facebook to make this clear in their new policy.