Google may be working on a new way to send files between devices without necessarily relying on the internet. This new feature, called Fast Share, may be intended to compete with Apple's AirDrop. Unlike Android Beam, it involves the instigation of Bluetooth connections.
https://www.notebookcheck.net/Google-is-now-reportedly-piloting-Fast-Share-an-AirDrop-alternative.426765.0.html