Jimmy Buffett's Margaritaville.com reports he has been released from the hospital, and CNN says that a Radio Margaritaville DJ said he had stitches. I've been listening to the guy's music since I was fourteen, and he seems like part of the family, perhaps the "crazy old uncle" he sings about. I hope he's okay.
UPDATE: According to this Al.com article, a physician, clad in "shorts, a tank top and sandals," was on the front row of the concert, saw Buffett fall and rushed to treat him. Doc said Buffett, "was not seriously injured."