According to a report on our friends at MI6 today, Bond 24 is due to start shooting on 6th December 2014.
The report says that Sam Mendes will assemble the cast for a readthrough of the script in late November and also that casting for the Bond girls and villain is currently taking place.
UPDATE: The source for this information appears to be the Daily Mail’s Baz Bamigboye, who scored a number of scoops on Skyfall. As well as the 6th December start date, Bamigboye says Sam Mendes plans to assemble principal cast members for a script read-through in late November. Expect a press conference at the beginning of December.
Source: Daily Mail