I've heard this rumour in a few places, but it'd be odd if this actually happened in the next Bond film (although I think it's unlikely). I, however, wouldn't actually mind if Bond became a homosexual. I do find the idea silly (after all, I'm used to seeing Bond around all those women, and I can't really imagine him being interested in men), but if it was done properly (by screenwriters, actors etc), it could work.