The Decemberists will appear on The Colbert Report on April 27th. The band have revealed the second leg of their "A Short Fazed Hovel" tour in July and August. [www.decemberists.com]

The Mars Volta are set to release their fifth album, Octahedron, on June 23rd. The first single will be "Since We've Been Wrong." This incarnation of the band includes Marcel Rodriguez Lopez, Thomas Pridgen, John Frusciante, Isaiah Ikey Owens, Juan Alderete de la Pena, Cedric Bixler Zavala and Omar Rodriguez Lopez. [www.thebedlam.net]

Head over to MySpace and stream the new album from Manchester Orchestra, Mean Everything To Nothing, in its entirety. The album is due next week. [www.myspace.com]

Green Day will celebrate the US release of 21st Century Breakdown with an album release show at Bowery Ballroom on May 18th. The band will most likely play the album in its entirety. [www.billboard.com]

Kenna, Justin Timberlake and Lupe Fiasco will climb Mount Kilimanjaro in Tanzania, Africa later this year to raise money for the worldwide water crisis. [www.spin.com]

Menomena will hit the road today on a brief US tour that includes a few dates opening for Bloc Party. Following the tour the band hope to "get some heavy lifting done" on their new album. [www.myspace.com]

The Chariot has posted the song "Evolve" from their forthcoming album, Wars and Rumors of Wars, on their MySpace page. The album is due May 5th. [www.myspace.com]

Tim Alexander (Primus, A Perfect Circle) and Luis Maldonado have formed Into The Presence. The duo will release their self-titled debut on April 28th. Listen to three tracks on MySpace. [www.myspace.com]

Philadelphia's mewithoutYou will release a new full-length, It's All Crazy! It's All False! It's All a Dream! It's Alright, on May 19th through Tooth & Nail. The album track "Every Thought a Thought of You" is now streaming on MySpace. [www.myspace.com]

English post-punk band The Fall has signed to Domino Records. The group are currently in the studio working on their 28th studio album. The record may be released in June or "towards the end of 2009." We've heard both. [www.punknews.org]

Tiga will release Ciao! on May 26th through Last Gang. The album features appearances from James Murphy, Gonzales and Soulwax. Preview some of the record on MySpace. [www.chartattack.com]

Jerry Cantrell revealed to Altitude that the reformed Alice In Chains, with singer William DuVall, finished recording their new album in March. The record is now being mixed and Cantrell revealed they're shooting for a September release. The sound is reportedly "everything from the darkest of dark, heavy shit to acoustic stuff." Listen to the full interview on YouTube. [www.roadrunnerrecords.com]

Billy Corgan has posted a lengthy blog entry regarding the future of the Smashing Pumpkins. I couldn't read it all, but apparently Corgan is "all in" for a new Pumpkins album. [www.smashingpumpkins.com]

Dave Matthews Band will release Big Whiskey and the Groogrux King on June 2nd. LeRoi Moore, who passed away last summer, appears on the album through some fancy ProTools editing and performances previously recorded. Watch a behind-the-scenes video on YouTube and read Billboard's interview with Matthews. [www.billboard.com]

A mostly reunited Dead Milkmen have been confirmed for the annual punk-rock Insubordination Fest, which takes place June 25-27th in Baltimore, MD. [www.punknews.org]

Eddie Vedder has announced a solo tour of the East Coast and Hawaii. The 14-date stint kicks off June 8th in Albany, NY. [www.pearljam.com]

In 2003, Jon Por Birgisson of Sigur Ros created Riceboy Sleeps, a side project for visual art and music, with partner Alex Somers. The duo will release their self-titled debut on July 21st via Parlophone Records. The track "Happiness" was recently contributed to Red Hot's Dark Was The Night compilation. [www.thetripwire.com]

You can preview and snag an MP3 of "Last One To Die", the first single from the forthcoming Rancid album, on MySpace. Let the Dominoes Fall is due June 2nd on Epitaph. [www.myspace.com]

Cake will return this year with a new album. In the meantime, the band has scheduled some show in support. [www.livedaily.com]

The Dead Weather, the new project from Jack White and Alison Mosshart, will play its first official show next week on April 14th at the Bowery Ballroom in New York. [www.nme.com]