Unfortunately, the list of concert cancellations for this summer continues to grow. The Hella Mega Tour, featuring Green Day, Weezer, and Fall Out Boy, originally scheduled for August 15 at PNC Park, has been postponed until 2021. And if you were one of the few people that had tickets for Nickelback at S&T Bank Music Park on June 30, you’ll be waiting a while to see the show. They’ve also postponed their tour with no announcement of rescheduled dates. Def Leppard, Motley Crue, Poison and Joan Jett & the Blackhearts are all on the marquee for one of summer’s biggest events, but the future of those shows is also uncertain. The bands have said they will officially announce their plans on June 1.