Metal overlords Black Sabbath are back, and not for the first time either, only this time round they've got a brand new album full of original stuff. And this might not be the last time we see the Brummie boys in the studio either, with bassist Geezer Butler admitting in an interview this week that he would be open to another album.

Featuring an almost entirely original line-up (drummer Bill Ward was not present for recording because of health problems) since 1978's Never Say Die, the band will stay true to the title of their last album with Ozzy Osbourne as frontman and release 13 later this month. Although it has been labelled as the 'final' album from the band, by the press and Sabbath themselves, after a string of successful reunion shows over the past year, Geezer spoke with Billboard this week when he revealed that he has been encouraged by the success to enough to think that another album could be a possibility.

"Let's put it this way; it's taken us 35 years to do this one," Butler told Billboard, "So if there's gonna be (another) album there's gonna be an album but I don't want to say if there's going to be a follow-up. I wouldn't mind doing another Sabbath album with them, though."

The band have had a great reception everywhere they've hit on the road in the promotional tour for the record, and when they've performed new tracks in Japan, New Zealand and Australia, the audience have looked every bit of it. Butler mentioned that when the group begin the North American leg of the tour they'll be playing at least "three or four" songs from the new album, with the band staying true to their fan-base and performing at least "three" or maybe "four" tracks per night, if not more.

With Rage Against the Machine's Brad Wilk stepping in for Ward, the Rick Rubin-produced 13, hits stores and iTunes on June 11. You can currently stream it on iTunes for free and the full list of remaining tour dates are available on the group's website.

Black Sabbath Kerrang
Sabbath, sans Bill Ward

Ozzy Osbourne Gay and Lesbian Centre
Ozzy Osbourne has said that the response the band's live shows overseas has been exceptional