Witnness line up?

Coldplay headlining the Saturday night we know about, but what about the rest of the Witnness line-up?
While there's no official word yet, plenty of clues can be gleaned from the bill of its sister festival, 'T' In The Park', which is taking place simultaneously in Scotland.
Reverse the days round and we reckon you could be watching:
Saturday July 12 – The Music, Supergrass, The Datsuns, Polyphonic Spree, John Squire, Dave Clarke, Biffy Clyro, Speedway & H Foundation
Sunday July 13 – The Charlatans, Zwan, The Coral, Underworld, The Streets, Echo & The Bunnymen, Lemon Jelly & Damien Rice
Not bad for starters!