In a stunning surprise, Austin City Limits Music Festival organizers sprung a doozie of an addition to their lineup this afternoon. In the hours leading up to their lineup release, ACL Fest had been releasing hints through their mobile app. Initial ACL app inbox contents included “I am lost in my mind, I get lost in my mind” and “I got my grub on, but didn’t pig out,” signaling the appearance of both The Head and the Heart and Ice Cube in this year’s lineup.

However, mere minutes after the lineup was released in full, this morning, a curious message appeared in the app’s inbox, asking “Now, can I get an encore, do you want more?” This mysterious note sent imaginations flying, and the twitter-verse unleashing a torrent of inquiries to @aclfestival.

Well, we just got notice this afternoon that the first lineup release didn’t have all the artists on it, and a new poster was released, now including Jay-Z, himself. Needless to say, he makes our list of Austin City Limits Music Festival must-sees, instantly!

Go on and brush your shoulders off, ACL Fest. You deserve to.

3-Day General Admission Tickets for both weekends go on sale today at 10am CT at www.aclfestival.com. 3-Day VIP and Platinum Tickets and Hotel Packages will also be available starting at 10am CT. Music fans ages 10 and under will be admitted free of charge accompanied by a ticketed adult. 1-Day General Admission Tickets, 1-Day VIP Tickets and 1-Day Platinum Tickets will be available later in the year.