Hot on the heels of their record-breaking concert movie Through The Never, the band might be about to announce something which drummer Lars Ulrich says will represent a new frontier for the iconic thrashers to cross. Last night Lars told 107.7 The Bone, "There's a very interesting thing coming our way in December… There's another frontier heading in Metallica's direction in December. Which, if anybody (at the band's management) even knew that I just said what I just said, they would hunt me down and silence me. But there is another frontier coming in December, which we're very excited about."

Now while on a press junket to promote the film, Lars joked with English journalists that the project was "Lulu Part 2 - just to piss everybody off!" Then he added that it an announcement was likely on October 8. "But don't hold me to that," he said, adding that the announcement isn't quite on the level of Through The Never.

So what could it be? A greatest hits album? A remix album? Something different entirely? It won't be long until we know!