Google has just made the next version of Android official. During the keynote address of its annual developer conference, Google unveiled that Android M will succeed Android Lollipop this year. Google says that Android M, which is debuting as a prerelease version today with a full release later this year, brings a host of new features and performance enhancements. But at the same time, Google's Sundar Pichai says the company has "gone back to the ...