At some point soon you will be able to get an embed code for a publish online document.
...The document can also be embedded on any website or blog using the embed code provided on clicking the embed option on the viewing layout...
Why is Adobe disseminating this information about indesign cc2015 august update if its not operational?
You never made a mistake before? Sheesh!
The engineers were working very hard under deadline to get the 11.1 release ready. That feature wasn't ready on release date. It will be available soon because it can be implemented on the "back end" in their servers. Stand by...
But it was already mentioned in the Help file, hence the mistake.