'Graspop Metal Meeting' promoters posted the following announcement:

"MASTODON have been forced to cancel their summer tour after guitarist Bill Kelliher was diagnosed with pancreatitis. As a result, RISE TO REMAIN, who are currently touring with MASTODON, will also be unable to make it to the festival and will be replaced by IRON MASK. The replacement of MASTODON will be announced as soon as possible.
Also STEEL PANTHER would not be playing at the festival and THE POODLES will be their replacement."

Source: www.Graspop.Be