I'm in the camp of 'they will have one more baby'...I expect another announcement when she's around 38.
LaRae
It is totally speculative, but I don't think they will have another baby. They are already above the expected number of children for modern families in the developed countries (which is two) and there is no need (in terms of succession issues) to have a fourth child. Of course, if they want to, they can have another baby, but, again, I don't see it coming.