He arrived a couple weeks late at 5.26BST, weighs 7lbs 3oz, doesn’t yet have a name (as far as we know), is an American citizen (too), mixed race, and seventh in line to the throne.
His dad, Prince Harry, was present at the birth, is “absolutely thrilled” and “so incredibly proud of [his] wife”, and unusually made the public announcement himself.
Quotes from the good and the great, as you might expect. Nice one from the Archbishop of Canterbury:
"May God bless the new family with love, health and happiness."
Continuing coverage from the BBC.