A little less than a year after Android Lollipop was announced at I/O 2014, Google took to the stage just five days ago and made its successor, Android M, official. Mind you, like before, we're talking about nothing more than a developer preview — hence the M name — and we're told to expect three updates to the build within that window.
In short, technically speaking, none of the features you see in Android M right now are certain to stay. That means Android Pay may go, Now on Tap may be reverted, and even the new app permissions system might get scrapped. ...