But the character of James Bond is well defined, first in the books by Ian Fleming, then in the movies. No, he isn't gay. Doing that would be creating a new character. Or destroying the old one.
It doesn't matter whether the original fiction character was gay or not. But the political correctness brigade and the pro-LGBT mafia will ensure that the character is tweaked to suit their own propaganda purposes. For example, in the Norwegian mythology, Heimdallr is described as the "whitest of all the gods". But still, Marvel got the shameless ghetto resident Idris Elba to play the role.