I think everything has been said and that all we can do now is wait for the O2 show and see how that goes. Even if Page, Plant, and JPJ ALL wanted to go on a tour, if the O2 show doesn't meet everyone's expectations there's no wait they'll do a tour after that. Maybe Plant is just waiting for the show before making up his mind, who knows.
All I'm hoping for now is that the O2 concert goes very very VERY well and that the boys have a blast playing it... and want to do more.