According to a post on TOOL's official web site, the band will embark on a tour this summer. No dates have yet been announced, but it is widely expected that TOOL will fill one of the remaining headlining slots for this year's Lollapalooza festival. The group would join JANE'S ADDICTION, DEPECHE MODE, THE BEASTIE BOYS, KINGS OF LEON and THE KILLERS at the top of the bill for the event, which is scheduled for August 7-9 at Grant Park in Chicago. Chicago Tribune music columnist Greg Kot was the first to report the Lollapalooza rumor, citing "multiple industry sources" for the news, although Lollapalooza organizers have yet to officially announce any acts.

A festival spokesperson told MTV.com that the lineup will be unveiled officially on April 21.

This year will be the fourth that Lollapalooza has been staged as a destination festival in the Windy City, following more than a decade as a traveling event.

Brad Angle of Guitar World magazine recently conducted an interview with TOOL guitarist Adam Jones. When asked how the songwriting process for the band's new album was coming along, Jones replied, "It's been coming along... great! [laughs] No, we've been on hiatus. I'm writing and [bassist] Justin [Chancellor]'s been writing, but [frontman] Maynard [James Keenan] has been working on his wine. We've all just been taking some time away from each other, which has been nice. I've also been working on producing some comics."

TOOL has been on break from touring and writing since early 2008, following nearly two years of supporting their most recent studio album, 2006's "10,000 Days", which marked its first set of new material since 2001's "Lateralus".

In December, Maynard James Keenan revealed that he had been working with A PERFECT CIRCLE guitarist Billy Howerdel on new material for a possible new release. When asked about releasing the material or touring, he stated, "I doubt if we'll do any touring or, you know, do a full album," he said. "We might do some one-off shows here and there if the timing's right and it seems like a good vibe and a smart thing to do. But most likely we'll just kind of concentrate on, you know, one or two songs at a time, rather than investing all the time and money and effort into making those plastic discs that no one cares about anymore."