Over all the Mylo Xyloto stuff today, one thing went overlooked. About last week, Coldplay sang at Steve Jobs Memorial. This just got on Apple's site today.
It you want to see them sing (Yellow, Viva La Vida, Fix you, and Every Teardrop), go to about 55 minutes on the video. If you have 80 minutes, watch the whole video, as it really was a great service for Jobs.
They said Coldplay "went over mountains" to play there, which I think was pretty nice of Coldplay.