Band released their last album '13' in 2013
Metal band's most recent album '13' was released in 2013
Ozzy Osbourne's band join Iron Maiden as headliners at Donington Park in June 2016
Iommi has been battling lymphoma since 2011
Veteran rockers will close the curtain on their career in 2016
Iommi was diagnosed with lymphoma in 2012
Former Black Sabbath drummer says Ozzy's wife and manager has disliked him "for a long, long time"
The reissue series will run throughout the summer
The band also told NME that they haven't started work on a new album
The heavy metal legends gathered to commemorate the fifth anniversary of the singer’s death