Kings Of Leon Cancel US Tour

Kings of Leon have announced that they are canceling the remaining shows on their current US tour, including the August 16th show at Darien Lake. After Friday's show in Dallas in which lead singer Caleb Followill left the stage after only a few songs due to 'vocal issues and exhaustion' after telling the crowd that it was too hot to perform. Brother and bandmate Jared Followill posted to his Twitter account later "Dallas, I cannot begin to tell you how sorry I am. There are internal sicknesses & problems that have needed to be addressed. No words." and then later that same night: "I love our fans so much. I know you guys aren't stupid. I can't lie. There are problems in our band bigger than not drinking enough Gatorade."

In an official statement, the tour says:
"We are so sorry to say Kings of Leon are canceling their entire US tour due to Caleb Followill suffering from vocal issues and exhaustion. The band is devastated, but in order to give their fans the shows they deserve, they need to take this break. Unfortunately, the US dates cannot be rescheduled due to the band's international tour schedule. Tickets will be refunded at point of purchase. Tickets purchased online or via phones will be automatically refunded. The band will resume touring in Canada at the Rogers Center in Vancouver, BC, on September 28th. That show was originally schedule for September 14th."

Is it really just too hot outside or is this the end of Kings Of Leon?