This is Android Lollipop Successor, Android M Has Finally Arrived

As expected, Google has finally made the Android M official. From the stage of Google I/O 2015, Google unveiled the Android Lollipop successor. Launching the pre-release version for testing purposes, Google said that the full version will be released later this year.
At Google I/O 2015 in San Francisco, Sundar Pichai, senior vice president of products at Google said the Google has “gone back to the basics” with Android M and focused on improving the quality of platform.
Android Lollipop- the biggest changes in Android, brought the visual treat to users with material design. Android M aims to bring the stability improvements that will be crucial in long-term frills.

Take a look at the first pictures of Android M below:

Android M launcher

Android M Memory Manager

Android M App Permissions

Android M System Tuner

Android M Theme

With Android M, Google is trying to hit the perfect balance of the stability and features. Working in the same direction, Android M has been made available to the developers.