When I saw this on the BBC News website:
It turns out that isn't quite the plan. Instead, it's just one of their songs being used as part of the closing event for the 2012 Festival:
Musicians across the UK will perform Coldplay's anthemic hit Viva La Vida as part of the London 2012 Festival finale.Uh-oh. Someone at the BBC is going to be in trouble after mis-spelling "anaemic" so badly.
The band have agreed to the track being played at 2pm on Sunday 9 September during the "Bandstand Marathon".
Oh. Apparently they did mean "anthemic".
Isn't it a bit of a dismal song - from a thematic point of view - on which to bring a festival to a close?