The test build, amusingly entitled Dogfood, is part of a planned security patch update set to be released to the public in May 2017. The company usually puts the security updates through the paces by internally distributing test builds of the updates in a process dubbed dogfooding. Google employees receiving and testing the updates are supposed to keep it to themselves and are barred from discussing it out in public forums.
Google may be releasing their next flagship device to be a successor to their Google Pixel device, the Google Pixel 2. It's a bit early for the May 2017 security updates so this could be one of those beta packages. But, Pixel XL received May Security update beforehand!
The major update that hit Google Voice back in January was mostly aesthetic, as it brought the app up to date with the company's Material Design standard, but didn't add much in the way of new features.More news: On Easter, Pope condemns 'vile' Syrian attack
According to users from both sections - Pixel and Nexus - the new update renders the fingerprint scanners useless, which means they are unable to do basic things like unlocking the phone using the sensor.
The highly anticipated Google Pixel 2 and Pixel 2 XL handsets have already started to trickle down in a steady stream, with the smartphones' specs and features being teased in leaks. We hope to see the upcoming Pixel or at least some teasers at the upcoming Google I/O Conference.