Rumor has it that they're coming to Monterrey, Mexico, at least. I've heard it three times already. A friend of mine heard it on the radio, a DJ commented on it but not as a fact, obviously. Then another friend told me that a guy he knows knows a promoter who claims Queen are coming to Mexico.
I've already seen the band 4 times in Europe (Vienna, Munich, Prague and Leipzig) but I'll definately go see them once again, now with all my friends... :)
Let's just hope they come to South America (actually, more than half of Mexico is in North America, but most people don't seem to notice or care, hehe)