Beyoncé Teases Surprise Features on New Album, Taylor Swift Suspected

New Beyoncé music is coming at the end of the month -- and based on what she's describing in terms of possible features ... a lot of folks think Taylor Swift will appear. The singer made a big announcement Tuesday -- dropping the release date for her forthcoming album, "Cowboy Carter," as March 29 ... and adding a lengthy caption to describe the process that went into making this one. Waiting for your permission…