Does any one know if the line-up is the final line up or if there will be more names added or just rumours

Does any one know when the tickets will get posted?

Does anyone know what celebrities will be appearing?

Line up that i know of:

Beastie Boys
Bloc Party
Black eyed peas
Corrine Bailey Rae
Damien Rice
Duran Duran
Foo Fighters
Genesis
James Blunt
John Legend
Kasabian
Keane
Madonna
Metallica
Paolo Nutini
Pussy Cat Dolls
Red Hot Chili Peppers
Snow Patrol
Spinal Tap
Terra Naomi

Looking forward to the indie bands and madonna,genesis but not so much metallica and rnb people (i like corrine bailey rae though and john ledgends ok)