Ed Sheeran Posts Mysterious Tweet Alluding to New Music

Ed Sheeran has returned to social media, and he's getting all mysterious and blue. Literally. 

The acoustic maestro/tender crooner/rap-rocker promised fans last year that he was taking a break after the 2016 awards season to rest up for another album cycle. (He told Fuse that his decision was in part to watching Justin Bieber burn out after intense touring.)