This year's SXSW Music lineup seems to be taking shape a bit more quickly than last year, as bands have taken it upon themselves to announce showcases publicly before the official list release by SX organizers. This is a departure from prior years, but since festival officials aren't complaining, we assume they're happy to let the hype build as the acts trickle in. This week's top thirteen additions:

Image via Simian Mobile Disco’s MySpace.

• Dolly Parton: One of country music's legends plays a rare date in Austin.
• X: John Doe and his cronies will play SX as the kickoff to a spring US tour.
• Simian Mobile Disco: Look for the British dance party action here at both an official showcase and the Vice day party.
• British Sea Power: The critical favorite returns with a new album which is drawing lots of Neon Bible comparisons.
• Q-Tip: A Tribe Called Quest's wordsmith bolsters the bigger than usual hip-hop lineup this year.
• Dizzee Rascal: Pitchfork favorite and UK grime pioneer is now confirmed for the festival.
• N.E.R.D.: Pharrell and Chad turn up to preview new material.
• Nortec Collective: Mexico's electronic wizards head north for an Austin visit.
• David Banner: Rapper, actor, and producer Banner could be doing all sorts of stuff at SX.
• Shelby Lynne: Alt.country's Lynne will showcase a new album of cover songs.
• Jens Lekman: Sweden's soft-spoken wonder and Austinist favorite returns after wowing a Parish audience last fall.
• Eugene Mirman: Avant-garde stand up and "Flight Of The Conchords" actor Mirman returns to MC multiple events at the festival.
• Constantines: Their new label, Arts & Crafts, has just released a 7" by the band, and though there's no word of a new full-length, they'll kick off a tour in Austin.

They're playing where?: Some venue announcements have also slipped in to this week's batch of press releases: My Morning Jacket will play the newly re-opened (though acoustically sketchy) Austin Music Hall on 3/13, perhaps (but not for sure) with Yo La Tengo in tow. And while dates conflict, multiple sources are saying that R.E.M. will headline at Stubb's during the fest. For you No Depression readers, Bloodshot's annual throwdown will hit the Red Eyed Fly.

The lineup as we know it (about 254 names at the moment) appears after the jump. As per usual, we thank Done Waiting, BrooklynVegan, and Austin360 for their help with additions to this list. As always, if you're in a band that is coming for the festival, or know of one that has confirmed, please email us: music@austinist.com.

SXSW 2008 acts as of 1/16/08:

AA Bondy
Alamo Race Track
Alex Skolnick Trio
Alina Simone
Aloe Blacc
A Place to Bury Strangers
Arp
The A-Sides
Ash Grunwald
Awkward Stage Band
Axel Krygier
Barara Mason
Bear Hands
Bella
Birdmonster
Birds and Batteries
Birthday Suits
Bjorn Torske
the Black Crowes
Black and White Years
The Black Hollies
Black Joe Lewis
The Black Keys
Black Moth Super Rainbow
Black Mountain
Black Tie Dynasty
The Bleedin Bleedins
Blitzen Trapper
Blue Mountain
Bon Iver
Born Ruffians
The Botticellis
The Bowerbirds
Brain Police
Breeders
British Sea Power
Bun B of UGK
Carbon/Silicon
Carlis Star
Carolyn Mark
Car Stereo (Wars)
Cary Brothers
Cheveu
the Choir Practice
Chris Bendt
Constantines
The Cool Kids
The Cops
The Crash That Took Me
The Cribs
Dan Wilson
Daniel Lanois
Darker My Love
Daryl Hall
Dead Confederate
Deadstring Brothers
Delta Spirit
Destroyer
Devotchka
Die! Die! Die!
Dirty on Purpose
Division Day
Dixie Witch
Dizzee Rascal
The DoDos
Dolly Parton
The Donnas
Donny Hue and the Colors
Doug Walker Music
Dreamend
Dokkebi Q
Doug Walker
The Duke Spirit
Eastern Conference Champions
Ed Harcourt
El Jesus de Magico
Eugene Mirman
Eugene McGuinness
Experimental Aircraft
Ezra Furman & the Harpoons
The Fairline Parkway
Fanfario
The Feral Children
Film School
Firewater
Fishboy
Fleet Foxes
Frightened Rabbit
Gallows
Giant
Glen Reynolds
Goes Cube
Greg Laswell
The Gusto
Ha Ha Tonka
Hanne Hukkelberg
The Hard Lessons
Headlights
Health
The Heavy
The Henry Clay People
Hey Willpower
Holy Fuck
The Hot Rails
The Hourly Radio
Ingrid Michaelson
Jandek
Jarboe
JD Thompson
Jennifer Johns
Jens Lekman
Jessie Baylin
Jimi Bianco
Joe Lean and the Jing Jang Jong
John Ralston
Joshua Radin
Justin Townes Earle
Kaki King
Karina Nistal
Kate Havnevik
Ketchup Mania
Kid Dakota
The Kills
Kim Hiorthøy
Kimya Dawson
Kitty, Daisy, and Lewis
KXP
Langhorne Slim
Laura Barrett
Laura Gibson
Lava Children
Le Switch
the Lemurs
Lightspeed Champion
Lindstsrom
The LK
The Lonely H
Longwave
The Lovely Sparrows
Lykke Li
Made Out of Babies
Mala Rodriguez
Man Man
Mark Pickerel
Mason Proper
Maya Azucena
Melissa Young
Meredith Bragg and the Terminals
Meriwether
Mezzanine Owls
MGMT
Mika Miko
Minmae
Mitra
Miz Metro
Monica Blaire
Moon Rats
My Brightest Diamond
The Morning Benders
My Morning Jacket
Nada Surf
Nadja
N'Dambi
Necropolis
Neimo
N.E.R.D.
Nicole Atkins
The Night Marchers
No Kids
Nortec
OFFICE
Ouija Radio
the Pack A.D.
Panda
Panther
Pato Banton
Peelander-Z
The Pendletons
The People's Revolutionary Choir
Pinstripe
The Pity Party
Plants & Animals
Popup
Portugal The Man!
PPT
Puny Human
Q-Tip
Radar Bros.
Ralph "Soul" Jackson
The Raveonettes
R.E.M.
Roadsaw
Robyn
The Rosewood Thieves
Run Run Run
Russell Taylor
Russian Circles
RX Bandits
Salvador Santana Band
Sam Champion
Sasquatch
Scissors for Lefty
Screamin' Cyn Cyn & the Pons
Sea Wolf
Secret Shine
Shame Club
Shelby Lynne
Shout Out Louds
Shwayze
Sia
Simian Mobile Disco
Social Studies
$olal
Sons & Daughters
The Soundtrack of Our Lives
Southeast Engine
The Spinto Band
The Stills
TAB The Band
Tapes N Tapes
Tech N9ne
These New Puritans
These United States
Tigercity
Tim Williams
Times New Viking
Tiny Animals
Trainwreck Riders
Trevor Giuliani
Tub Ring
Tussle
Uffie
Unholy 2
The Valley Arena
Vampire Weekend
Vancougar
The Von Bondies
Von Iva
The Voom Blooms
Waco Brothers
Wallpaper
Was (Not Was)
The Watershed
We Are Standard
WHY?
The Weird Weeds
White Shoes & the Couples Company
White Williams
William Fitzsimmons
Wussy
Wye Oak
X
YACHT
Yazarah
Ze Dos Frangos

Thanks to Austinist's Carly Kocurek for compiling the band list.