on their forums:
Absolute Radio had this on thier website for a while.

2011 will see the festival headlined by The National, Paolo Nutini, Suede and Foals.
Also on the line-up are Anna Calvi, Avi Buffalo, The Bees, Bellowhead, Bright Eyes, British Sea Power, Caitlin Rose, Caribou, Chapel Club, Crocodiles, Crystal Fighters, C.W. Stoneking, Deerhunter, The Duke And The King, Edward Sharpe and the Magnetic Zeros, Edwyn Collins, Esben and the Witch, Everything Everything, Fight Like Apes, Foster The People, Glasser, Gold Panda, Graffiti 6, Hurts, I Am Kloot, KT Tunstall, Jenny and Johnny, Isobel Campbell & Mark Lanegan, Kele, The Leisure Society, Lloyd Cole, Marques Toliver, My Morning Jacket, The Naked and The Famous, OMD, Paloma Faith, Phidel, Rumer, Thea Gilmore, Tripwires, Trophy Wife, The Vaccines, Villagers, Violens, Wanda Jackson, The Waterboys and Yann Tiersen.