OK, so although we're waiting for set lengths to be announced, from the spreadsheets that are out there I can see some killer clashes.
Main ones that worry me are:

Portishead v Boris
No Age v Bill Callahan
Man Man v Why v Devo
Mary Weiss v Okkervil (saw Silver Jews other week)
Menomena v Mission of Burma v Deerhunter
LSF v 808 State

Some tricky ones there, the Man Man one is a real decider, anyone seen Why? live before?
What about t'others, your suggestions please!!!