Well the first report was over blown and he will be able to play the concert on the 13th

Dead Man Good to Go for Obama Benefit - E! Online
Jerry Garcia 2007 Reviewed by Jerry Garcia 2007 on . Greatful Dead reunion!!! Anounced. It has been anounced that all the former GD band members and the Almond Brothers are having a reunion benifit concert in State Collage PA on October 13. This is a benifit concert put on by DEADHEADS FOR OBAMA. See you there. Rating: 5