Even under the old rules a girl would come before Harry. Of course the Beeb are getting it wrong saying: "
Because of the law change, even a girl would be third in line".
Wrong! A girl would have become third under the old rules, but would be "gazumped" by a younger brother. That's the bit that has changed/will change.
And Harry (probably to his relief!) just shifts further and further down the line of succession, just like his uncle Andy did (who similarly "gazumped" Anne from 2nd to 3rd when he was born. (She's now 10th, and will slip to 11 after the Wales-ling is born - or 12 if it's twins!!)
But hearty congrats Sir and get well soon Ma'am.