From ReelMovieNews.com:
According to the James Bond fan site, MI6, James Bond could be shooting this November in South Africa.
According to the site, former cricket player Darren Gough was on a flight to Johannesburg, South Africa and spotted director Sam Mendes and producer Barbara Broccoli on the same flight to the region.
Actor Nigel Lindsay sort of confirmed this news - he says he was visited by Mendes on the set of London's Shrek: The Musical and was told he was heading out to prep for 007 shooting.
So, we put two and two together - he was on a flight to Johannesburg and was also headed out to prep for 007 shooting - sounds like all the pieces fit.
This is just a rumor for now, so take it with a grain of salt. Anyways, the currently untitled 23rd James Bond film will hit theaters November 2012!