Could there be a right royal kerfuffle over rules of succession?
So Prince William is getting married to Kate Middleton next year, which means that by the end of 2012 we could well start having another generation of heirs to the throne.
Politicians have long talked about changing the succession rules, which currently operate male preference primogeniture - male heirs getting preference over their older female siblings (which hasn't actually been an issue for many decades).
Lord (Jeffrey) Archer introduced a bill on this in the Lords in 1997 - before he went to jail - which was designed to remove any distinction between sexes in determining the succession to the Crown.
If I remember rightly the Palace and both the Major and Blair governments made sympathetic noises about what Archer was trying to do. And Lord (Alf) Dubs tried the same thing in 2004.
Surely now is the time to resolve this? And if the change was enacted right now, it wouldn't really affect any of the three immediate heirs to the throne - Charles, William and Harry.
But if it's left for another couple of years, and William and Kate have a girl, then there will be a right royal kerfuffle.
And it will be much trickier then since the issue would obviously affect known individuals, which might mean it has to be postponed for another generation.
A colleague has pointed out that the Labour MP Chris Bryant raised this issue in the Commons on 1 July this year.
The junior minister in charge of constitutional reform, Mark Harper, acknowledged then that "currently the first three members of the royal family in line to the throne are all male and so we have some time until there may be a pressing issue to address".
But Harper also argued that any change in the law would be difficult as the Queen is also "sovereign of a further 15 independent nations and they have a right, with us, to decide on the line of succession. I do not suggest that they would necessarily have any problems with removing outdated provisions, but it is not the substance of the issue that is the problem; the problem is how we go about doing that."
It would not just be a matter of changing the rules in the UK, but also in Commonwealth countries such as Canada and Australia which have federal constitutions.