Among the many features Google talked about when the Android L preview rolled out was an improved version of Android Beam, and it's here in the new Android 5.0 dev preview. NFC sharing has existed since Android 4.0 in some form or another, but now it's finally something you can use without second-guessing yourself. Just pick a file and start beaming.
A new update to Google+ is currently rolling out, and when it hits your device, not only will it bring along the usual bug fixes and performance increases, it will contain a number of new features. The Photos app now supports Android Beam, so two Android owners can share images with one another over NFC. There is also the new option to set images within Photos as a Daydream that plays whenever a device is docked.
Everyone has been making a big deal about NFC lately - which phones have it, where it can be used, etc. Until last night's announcement, many (including myself) didn't see much on the horizon except a fun way to pay for things using your phone. That perception has changed, however, thanks to Android Beam.
Beam utilizes NFC technology to quickly, seamlessly transfer data from one device to another. As demonstrated last night, one has only to touch the two devices together to send just about anything from web pages, to photos, to apps.