Coming Today: Google Photos app with unlimited backups (up to 16mp)

During today’s Google I/O 2015 (see video), Google revealed a stand-alone Google Photos app that will be available on Android, iOS and the Web. It will sync with Google Drive, and has a number of features including free unlimited backups for images up to 16 megapixels and videos up to 1080p. Not sure yet what happens for images over 16mp.