Thingy Broccoli is on record as saying Bond will never be a woman. Perhaps they're thinking of a spin off or perhaps it's a bit of tokenism. Bond needs another refresh now. When the Bourne series came out it made Bond look old and dated and they moved to copy it but now Bourne looks old and dated and whatever they do after Craig needs to be different.
If the rumours are true, two things are guaranteed to happen. 1) as a self confessed Bond geek, I don't really care what sex/colour she is, as long as she is a good Bond and 2) all the incels on 8Chan/Twitter will have a fit and it won't be pretty.