I guess it really is only a reheated rumor.
But let´s just enjoy speculation for a moment...
- Sam Mendes did complain that there was barely enough time for post-production on SKYFALL
- Maybe he wanted to have more time - or maybe certain actors he wants can only be available earlier, so...
- BOND 24 starts production not in the fall but in the summer...
- Which is why Craig dropped out of "The Whole Truth"...
- And Penelope Cruz, indeed, is cast. Along with Ejiofor.
Also, I could imagine that the production start for BOND 24 gets moved to summer because... the release date will be pushed to summer 2015 as well? Because, let´s face it, SKYFALL did huge numbers because it could play well into the Christmas season. In 2015, however, the Christmas season will be owned by STAR WARS VII. And even if one thought that there might be room for Bond as well... Christmas 2015 also is the release date of another action-adventure-blockbuster, the new installment of "Mission Impossible".
So...