The old clause:
Apps can read or play approved content (magazines, newspapers, books, audio, music, video) that is sold outside of the app, for which Apple will not receive any portion of the revenues, provided that the same content is also offered in the app using IAP at the same price or less than it is offered outside the app. This applies to both purchased content and subscriptions.
The new clause:
Apps can read or play approved content (specifically magazines, newspapers, books, audio, music, and video) that is subscribed to or purchased outside of the app, as long as there is no button or external link in the app to purchase the approved content.
Looks like all of those publishers wondering what would happen at the end of the month are back in business. FT, Kobo, Spotify and Kindle are all off the hook. It also explains why so many people were unable to get a straight answer from Apple in the last few weeks.