The group's final LP was initially set for release later this year
Black Sabbath row continues after drummer demanded an apology for being left out of 2013 reunion
Black Sabbath drummer wants an apology from Osbourne for calling him overweight
Drummer says he's 'been in deep regret that a true union was denied' to fans
Fans began to speculate after the band cancelled a 'farewell gig' in Japan
Ozzy Osbourne will now perform alone at the Japan leg of Ozzfest
Band have announced that they will bow out with Japanese festival date in November
It's not known whether this will be the band's final show or simply their last in Japan
Bass player was arrested on assault charges on January 27
Bass player was taken in by police after incident in Death Valley, California