> If your Linux laptop doubles as a music player, another nice new feature is that you can now stream your audio over USB even while the rest of your system is asleep. That capability's been available in Android for a while, but now it's part of mainline Linux.

I thought Android did that by just turning off all but one CPU core and suspend all processes not required for streaming + bluetooth?

I really can't imagine how else that would work, other than essentially giving the whole audio file to the Bluetooth chip and let it handle streaming on its own... but I've never heard of a Bluetooth chipset capable of that, much less bluez actually being usable enough.