NME reports that the Spice Girls are rumored to be the opening act for the 2012 Olympics in London.
The girl group's manager Simon Fuller said the time frame of the games would be perfect for a reunion to take place, adding that the band want to perform again before they are too old. "They will not want to be performing hits like 'Wannabe' in their 40s, but it's amazing how often people talk about another reunion. And I think if they do it, it's going to be in 2012," he explained.
The Spice Girls last tour was in 2007 and 2008 so that would make for a four year spread between tours. Wikipedia says the last tour for the Spice Girls was a success and grossed over $70 million. A performance at the 2012 Olympics could give a tour a big boost.