"People familiar with the situation" (yes, them again) have told the Wall Street Journal that both Fox and ABC are good to go on $0.99 iTunes TV show rentals, and will be announced later today at Apple's special music event. Since ABC is owned by Disney, whose largest shareholder is Steve Jobs, their getting on board isn't a huge surprise. Likewise, Rupert Murdoch, owner of Fox, introduced Jobs at D8 and is all up in Apple rescuing print media (like the Wall Street Journal) and TV alike.
NBC, recently sold to Comcast -- whose cable empire would compete with iTunes -- and CBS, who likely isn't sure what these new fangled 'puters and gizmos are all about anyway, is disappointing but also not surprising.
How this will mix and match with Netflix and other, similar apps already on iPad and iPhone -- and rumored to be coming to a new Apple TV -- is also unknown. $0.99 a pop might not be enough for myopic media companies, but compared to a far bigger Netflix pipe at $10-$15 per month, it's likely too much for high volume consumers.