San Francisco's August just got a whole lot more fun with the announcement of the Outside Lands 2011 Lineup today via twitter. As noted earlier here on MetroWize, the giant event that takes place in August in Golden Gate Park has moved back to a 3 day format. The dates for 2011 are August 12-14. Tickets for the fourth annual event will go on sale Thursday April 14 at 12 Noon PST via www.SFOutsidelands.com. A significant portion of every ticket sold will directly benefit San Francisco's Recreation and Park Department.

Now on to the good stuff. Here is the initial lineup offering in all its glory.

Muse
Phish (2 sets)
Arcade Fire
The Black Keys
Deadmau5
MGMT
Girl Talk
Decemberists
John Fogerty
Erykah Badu
The Original Meters
Beirut
the Roots
Arctic Monkeys
Big Audio Dynamite
STS9
Warren Haynes Band
Big Boi
Major Lazer
Little Dragon
Julieta Venegas
Sia
OK GO
The Greyboy Allstars
Joshn Ritter & the Royal City Band
Old 97's
Mavis Staples
!!!
Latyrx feat. Lyrics Born & Lateef
Best Coast
Collie Buddz
Phantogram
Charles Bradley
Foster the People
Lotus
Strfkr
Junip
Pajama Party
The Infamous Stringdusters
The Vaccines
Toro Y Moi
Vetiver
The Limousines
The Stones Foxes
The Joy Formidable
Macklemore & Ryan Lewis
Wye Oak
Ana Tijoux
Orgone
Lord Huron
Tamaryn
Grouplove
the Fresh & Onlys
Ximena Sarinana
Ty Segall
Sunbirds
Nicki Bluhm & the Gramblers
Diego's Umbrella
Ghost Robot

Stay tuned for more info as it becomes available here on MetroWize.com