Invitations When Harry Met Sally Harry Potter Invitations With No More Dumbledore?

Harry Potter invitations with no more Dumbledore? - invitations when harry met sally

I have a party celebrating the publication of Deathly Hallows (and several previous games had HP), and I wonder how I am doing the invitations. Normally I would not write a letter from Hogwarts at "acceptance", but with the end of Half-Blood Prince, I change it? And if Hogwarts will not open? Should I be if McGonagall is usually Dumbledore? What is the part that says that all contributions Dumbledore, McGonagall everyone has it?

(Yes, a question is useless and pedantic, but simply * not * Dumbledore right to write about them)