On the 99 Revolutions tour Wikipedia page, [ http://en.wikipedia....evolutions_Tour ] under Green Day Tour chronology after 99 Revolutions it says Dookie: 20th Anniversary World Tour.
I am not sure how legitimate this is, and it is certainly unofficial.
And I'm not sure I would like to see just an hour show of Dookie, but I don't think that'd be the case - but I have no idea how they'd go about it.
On the page it only specifies a Dookie world tour not American Idiot. They are obviously not going to do two tours for each of the records, but maybe they'd play Dookie and American Idiot, in full.
Despite "casual" fans (meaning 1. "Omg, Green Day are my life" 2. "Name some songs" 1." 21 Guns, American Idiot, Basket Case") buying a fair share of tickets I would still love to see that. For some reason, I think I'd like to see American Idiot in full more....
Probably just to see Rock n' Roll Girlfriend ;D