The future map of the world?

It's unlikely that this kind of change would take place in a short enough time span for it to actually kill millions of people. I don't think the death count would be very high at all, it'd just be more populated in other area's of the world instead. The migration would be a bitch.

Pretty much this, yeah. The water levels will start rising faster, but it's not going to be like an epic flood or anything.