Sidenote, it behaves differently if you've enabled airplane mode (or at least so the UI would indicate). In airplane mode, it gives no message and the wifi/bt icon goes transparent. If you're not in airplane mode, the wifi/bt icon goes light gray and it says 'disconnecting <device type> devices until tomorrow' but the radio is still on as your article mentions.

Personally I miss the old behavior where it just turns it off, but I'm often in airplane mode so I get the old behavior anyway and great battery life :P