Now that Google+ is splitting up into individual services, where will you go to back up your phone's picture library? To Google Drive, apparently. Android Police has discovered that the latest version of the cloud storage app on Android has preliminary code for an eventual photo backup feature that would behave much like Google+ or the standard Photos app. You'll have an easier time sharing your files on the big screen, too -- there are hidden mentions of Chromecast streaming support. These features may not go live in the next release (Google sometimes leaves pre-release code hanging around for a while), but they're likely coming sooner rather than later.