Taylor Swift has something cooking for Friday.
She has attached the "4.26" date along with every one of her Instagram posts for the past week-plus, and fans know that she's hinting at something major, but whether it's a new single, album, collaboration, music video or all of the above (or none of the above!), they don't know -- and the suspense has led fans to come up with their own suspicions to uncover the mystery.