Leave it to the Godfathers of heavy metal to make a big announcement on Friday the 13th. Black Sabbath announced that they will wrap up the year by releasing a brand new live dvd entitled "Gathered in Their Masses" on November 26th, according to Loudwire.

The dvd was shot over a 2-show period in Australia on April 29th and May 1st. You can watch the teaser footage above.