American Bandstand 50th ... Special ???

Has anyone heard anything about the American Bandstand 50th Anniversary special? I read on MSN that Michael Jackson, Alanis and Cher are performing. Now I hear that NSync and Jennifer Lopez will be on it too. Its not often they do live T.V. appearances anymore so I’m stoked to watch it. It’s May 3rd on ABC. I got my info from here: Anybody else have info on whether-or-not NSync and J-Lo will be performing???