As you can see, there's been A LOT of rumors about Green Day touring South America for the 99 Revolutions Tour, this rumors begun a quite long time ago (Like in 2011) and after the disaster at the IHeartRadio Festival, those rumors begun to stop. BUT! Like two weeks ago, some fan-websites claim that Green Day is almost confirmed to visit South America on March, April or May 2014.
Also some "concert-makers" (I don't remember the actual word in english, Ok? ) are leaving some "clues" that confirme a bit these rumors like this tweet from @Evenpro (Venezuela's Concerts Company):
What do you think folks?