I don't actually think they are going to show the whole thing at once. The security guys there yesterday said it was most likely to be used as individual show as each song is released. So Undivided, Bounce, The Distance & Misunderstood will be released as singles.
Cat Deeley wasn't there, just the sound crew, Jovi were the only guys recording as most of the recording is done live whilst the show on air in the morning.