Justin Bieber made a guest appearance on The Voice tonight to premiere a clip of his new video for "Boyfriend," the first single off his upcoming album Believe. He also announced that Believe has a firm release date of June 19th, saying, "That is the official date. I'm positive. I'm not going to change the date." He made the announcement via his Twitter page as well (see below). Be excited, Beliebers.
#BELIEVE - JUNE 19th!— Justin Bieber (@justinbieber) April 18, 2012