William and Harry discuss their grandmum: http://www.people.com/people/package/article/0,,20395222_20565768,00.html
I think it will pass over to Will.
Not if Charles is still alive and of sound mind.
I hear this all the time, but it seems to me to be like proclaiming that you think Sarah Palin will be the Republican candidate in November: it’s not actually impossible, but it would require something remarkable to occur (the most likely of which is that Charles will die before his mother).