Third generation
England has changed the rules for succession, allowing the first-born child to inherit the crown regardless of gender.
The timing is interesting. Obviously the rule is built for William, whose first child is a girl; but it will probably take several decades before that generation gets near the throne.
Wonder if the timing is a not-so-subtle hint to Charles the Microwit? "Elizabeth doesn't have much time left. We're making rules
right now for the sake of William and his kids, not for you. Please abdicate your inbred idiot arse now, to clear the path for William."