The star lost his battle with stomach cancer in 2010, aged 67, but his manager wife Wendy Dio has been dedicated to keeping his legacy alive, and she claims there is plenty of her late husband's work fans have yet to hear.

Wendy, who now manages his former Dio bandmates as the regrouped Dio Disciples, claims there are "precious" tapes in his music archives which are still to be released.

She told The Blairing Out With Eric Blair Show, "I have four albums that I own (the rights to)... and we have some precious things in the archives, which we're going to put out and add on there, and I think Rhino (Records) will put it out next year."

She also reveals there is a lot of old concert footage of Ronnie, recorded while he was a member of Ritchie Blackmore's Rainbow group, although she fears that may never be made public.

"I've actually got stuff from Rainbow we're not allowed to put out, but we've got stuff," she added. "We videoed almost every show."

Dio fans were recently given a treat as Ronnie was resurrected in hologram form in August (16) to help close out the Wacken Open Air music festival in Germany.

Wendy brought her husband - and his vocals - back to life with the help of experts at Eyellusion, and she is planning to take the hologram on tour with the Dio Disciples next year (17).