Google app 7.10 reveals that ‘Bisto’ are headphones
that run Google Assistant [APK Teardown]
https://9to5google.com/2017/08/21/google-app-7-10-reveals-that-bisto-are-headphones-that-run-google-assistant-apk-teardown/

The Pixel 2 is probably getting smart Google headphones
http://bgr.com/2017/08/22/google-pixel-2-release-date-near-bisto/