Recently, Mac Miller gave several important announcements, revealing that he has an album titled GO:OD AM in the works and inked a reported $10 million deal with Warner Bros. Records. Today, Miller dropped a new track and its accompanying video titled "100 Grandkids," the first single off his 17-track project. The rapper also announced a yet-to-be-named tour for his album, which will begin later this summer. Kicking off on September 20 at Pittsburgh -- two days after the release of his album -- he will make stops in LA, San Francisco, Montreal, New York City, London, Paris and Berlin. Listen to the song, watch the video, and check the tour dates below; pre-order his album here and head to his new website for ticketing information.