From Reddit:

• Daisy chaining: I can connect two Bose headphones to one device. I’d love to do this with AirPods, so my SO and I can watch the same movie on an iPad, or listen to the same podcast on a walk. (This is called “Music Share” in the Bose Connect app, but works with any audio coming from the device.)

• Multiple Active Devices: My Bose headphones can connect to two devices at once. I’d love to be able to have an active connection to 2-3 devices on my AirPods, so I can use my phone / tv / laptop all at once.

• A connection management tool. I thought I’d hate this. But I love it. I can easily select from a list of past devices which ones I’d like my headphones to be connected to, and it does it nearly instantly.

That first one is my favorite. I would love to be able to share audio with someone when playing it out loud is not practical, or allowed. For example, watching a movie together on a long plane or train ride. Or watching TV, late at night when the baby is asleep.

Used to be, you’d plug in a splitter and then plug in your wired headphones. Two headphones Bluetooth’ed into your iOS device or Mac would be a terrific idea.

This a Bluetooth 5 thing? I believe the W1 chip in the AirPods is based on Bluetooth 4.2. The W3 chip in the Apple Watch Series 4 supports Bluetooth 5. So might this feature be possible in the next generation of AirPods?