Billy Talent are the special guests for sunday mainstage.
Devendra Banhart is the special guest on NME Stage Sunday.
Paramore added to saturday mainstage.
Aiden, The Sounds and The Scare added to Friday NME Stage, with Brakes and Dogs added to NME on Saturday and Pull Tiger Tail on sunday.
Make Model, Maps and Plain White T's added to Carling stage.
DANCE Stage announced: UNKLE, !!!, Peeping Tom, Digitalism, Data Rock, Lethal Bizzle, Metronomy, Dan Le Sac Vs. Scroobius Pip, Does It Offend You Yeah?, Crystal Castles and The Teenagers.
Lock-Up Stage announced:
FRIDAY (Reading) Jimmy Eat World, The Living End, Thrice, Mad Caddies, The Bronx, Capdown, Big D And The Kids Table, The Draft, Street Dogs, King Blues, Riverboat Gamblers and The Grit.
SUNDAY (Reading) New Found Glory, Turbonegro, Gallows, Dwarves, From Autumn To Ashes, The Cancer Bats, The Casualties, Ignite, Municipal Waste, Sonic Boom Six and The Ghost Of A Thousand.