Earlier on this National Metal Day (11.11.11 at 11:11 Pacific Time) the original members of Black Sabbath, announced their reunion at a press conference at Hollywood’s Whiskey A Go Go. guitarist Tony Iommi, singer Ozzy Osbourne, bassist Geezer Butler and drummer Bill Ward announced that they are working on new material for an album which will be made available Vertigo/Universal Republic in the U.S. and Vertigo in all other territories.

There is no for the album as of yet but it will be produced by Rick Rubin, who has previously worked with Metallica, Slipkknot, Slayer and System Of A Down, Red Hot Chili Peppers and many, many others. The band plans to begin recording the album in January for a fall 2012 release. A world tour will follow, including an appearance at the U.K.’s Download festival on June 10, 2012, joining the previously announced Metallica as headliners.

Tony Iommi said: “It’s now or never. We are getting along great. Everything’s really good, it’s like putting on an old glove. It’s fantastic,” he added.

The band credited Rubin’s persistence for helping get them back in the studio. “He phoned us every five minutes,” Iommi joked. “It was the obvious choice,” Ozzy Osbourne explained of choosing Rubin as producer. “I’ve known Rick for many years.” “It was time,” said Osbourne of the reunion. “The timing was right.”

Osbourne also revealed that they’ve written “seven or eight” new songs for the album, which they plan to release in the Fall of 2012. Geezer Butler added that the new songs are “back to the old SABBATH style and sound. The stuff that Tony’s been playing is absolutely brilliant.”

Rubin, who was also present at the event, said: “We’ve been working on developing material and we’re halfway into the writing process. It’s inspiring hearing what’s coming out.”

Check out the footage of the press conference, hosted by Henry Rollins:

The original Black Sabbath lineup hasn’t toured since 2005 and last appeared together at their inducting into the Rock And Roll Hall Of Fame in 2006. They attempted to cut a new album — their first since 1978’s “Never Say Die!” — with Rick Rubin in 1999, but the sessions fell apart after just a couple of songs and Osbourne turned his attention to his solo career. The Ronnie James Dio lineup reunited as Heaven & Hell in 2006, but ended last year with the death of Dio.