USB Type C actually includes a special mode allowing analog audio output specifically to allow "USB C" headphones (and adaptors).[0] Whether anyone will actually implement it is another question.

[0] See pages 24-26, 29, 34 of this PDF: https://intel.activeevents.com/sf14/connect/fileDownload/ses...

I hope they don't do that, I don't want to go around with a DAC hanging off my headphones. And making them more expensive.

It wouldn't need a DAC, just a special plug. Type-C connectors support an analog audio mode.

Nice, I wasn't aware Type-C could route anything analog besides power. I assumed it just piped digital serial protocols.

Well, considering that USB A headsets are already pretty common...