Black Sabbath guitarist Tony Iommi says that the band's earliest recordings, dating back to when they were known as Earth, will be released "at some point".
Last year it was announced that an album's worth of material from Earth has been unearthed and would be released as The Legendary Lost Tapes.
At the time, the group's former manager Jim Simpson stated, "These recordings clearly demonstrate what fine music they produced right from the very beginning. We recorded these tracks at Zella Studio in Birmingham in 1969, but held back from releasing them as their style was evolving so quickly.
"Now, some 57 years later, the recordings assume a greater importance, illustrating how these four young men from Birmingham, barely out of their teens, were excellent musicians and a fine band, fully deserving of all the success that was to come their way."