Police say the Rochester crowd crush may have been triggered by unfounded fears of gunfire.
The Sept. event will also host Billy Strings, Buddy Gy, Duran Duran and Wayne Newton.
While performing at Mt Smart Stadium in Auckland, New Zealand, Styles broke out into the "Banana Song" once again.
Sublime's original frontman Bradley Nowell discovered Slightly Stoopid in 1996 and helped launch them to stardom before his untimely death later that year.
"I LOVE U PARIS," the musician wrote on Instagram after a recent concert.
Event produced by Brooklyn Made and Crush Music will be held Sept. 15-16.
The combined attendance across Sheeran's two shows, at almost 215,000, will take some beating.
The solo acoustic run of shows kicks off on Apr. 30.
Lizzo, Carly Rae Jepsen, Blondie, Lana Del Rey and more will take the stage this June.
The outing was originally slated to kick off on Friday in Houston.
