Users will be able to share a link to Office documents that blocks recipients from downloading copies but still allows them to view the document in Office Online.
Users can create links that block download by using the common Sharing experience that exists across Office 365. By going into Link Settings they’ll be able to toggle the “block download” option for view-only links.
We’ve completed rollout for “anyone” and “people in my organization” links, and are working on enabling it for the remaining link types.
Moving this to “thinking about it” status. We understand the ask here, but don’t have specifics to share at this point.