Live8?

Now I'm confused, I just read something that said Sir Paul McCartney, U2's Bono and Coldplay's Chris Martin will open Live8 with a version of Sgt. Peppers. What?? It's been "known" in u2 fandom for weeks that U2 would be opening the show, with Paul, but what's this about "u2's Bono"? If the other boys aren't going to be there that is just WRONG! I'm off to investigate...