This isn’t really news; Ralph Fiennes has confirmed he’ll be returning as M in Bond 24, saying he is “looking forward to it very much”, according to an article in Metro quoting Yahoo Movies (which I’ve been unable to source).
The Metro piece then goes on to trot out the normal tabloid nonsense about Bond 24; that Fiennes will officially become Bond’s boss (he was at the end of Skyfall); Barbara Broccoli’s comments about wanting to shoot in Ireland (she was being diplomatic); and that the film will be based in Devil May Care (it won’t).
Source: Metro
UPDATE: Thanks to HMSS Weblog for pointing me in the direction of the Yahoo Movies article here.