Who's going to replace Daniel Craig as the next James Bond?

If memory serves me right, the designation is 00. I remember references to other 00's in some Bond movies. But even if 007 is the only designation, the name James Bond is not, and Bond has a fleshed out background story.
Yes, in fact, a couple of other 00s appear in a couple of the Connery films, maybe one of the Moore films, but I don't think another 00 has been in any of the films since the Timothy Dalton one that starts with the sabotaged exercise on Gibraltar (The Living Daylights).