I say this as a staunch Republican (anti-monarchy, feel the queen is an appalling parent, prob. not that bad a monarch, feel it is highly unlikely that Prince George, or even William, will ever be a king, or if he is, it will be more in the low key middle-class-friendly Scandi style), but I haven't seen all that much about the birthday.
Don't have a tv so I don't see that.
Online:
BBC News: yep
Guardian: nothing
Independent: Prince has been found dead, but nothing about any actual royals, except something about the cost of the Queen.
Don't read Telegraph/DM, although I imagine they're all over it.
Who else is there?
The Times: okay, that's a bit boak-worthy. I bought my Dad a Times sub recently to wean him off the Telegraph/DM, so at least his bizarrely conservative rhetoric would have some research behind it. Not sure he'll be convinced by today's fawning nonsense!
Beyond that, it's mostly threads on here complaining about it... 