Supposedly, the Fenway dates in Boston are off. Someone heard it on the news and posted it to Backstage. The only thing I could find on the web is this passage from the Boston Globe's website:

Bon Jovi out of lineup
Looks like Jon Bon Jovi won't be riding his steel horse this way after all. We're told the Jersey rocker, who was lined up to play at Fenway this summer, is officially out. So who'll carry on the concert series at the lyric little bandbox? How about James Taylor and Neil Diamond? That's the buzz at the moment, though no one will say it on the record. (To its credit, The Boston Courant has the news on its front page today.) No dates have been announced, but the Sox previously applied to the city for live-music permits on July 19 and 20. A fan favorite because his song "Sweet Caroline" is played at every Sox home game, Diamond is scheduled to tour Europe in May and June, but his website lists no dates in July. Sweet Baby James, meanwhile, has a gig in British Columbia July 19 and in Seattle July 21, but his schedule is open on July 20. Oddly, Taylor's assistant seemed surprised yesterday when we asked her if the Grammy winner will be singing in the shadow of the Green Monster this summer. "Not even sure what you're referring to," Ellyn Kusmin said in a text message. Hmm. Bruce Springsteen was the first to play Fenway in 2003, followed by Jimmy Buffett, the Rolling Stones, and Dave Matthews.
http://www.boston.com/ae/celebrity/a...ow_her/?page=2

The only confirmed date at this point is Sunday, July 6, at Bayfest in Sarnia, Ontario - http://www.sarniabayfest.com/.