The Ides of March co-star Jeffrey Wright has played CIA agent Felix Leiter in the last two James Bond movies--Casino Royale and Quantum of Solace--opposite Daniel Craig, but it is not looking likely that the character will be back for Sam Mendes' James Bond 23.
Wright told ComingSoon.net at the Toronto International Film Festival today that he hasn't gotten the call to return. With filming starting soon for a November 9, 2012 release, we assume the production would have been in touch with him already.
While the character may not appear on screen in the new 007 movie, Wright did tell us that there's a possibility that Felix Leiter may be on the periphery and mentioned in the film.
That's the current status, but with still over a year to go before the movie comes out, things could always change.