Headmaster Portraits (was Re: Dumbledore dead?)

[Wendy Dupuy]

No: HPFGUIDX 151621

Hickengruendler:
>> <snip> I am willing to bet that we will see Dumbledore return in 
some shape in book 7 (and I don't mean the portrait, which is highly
likely to appear or a Pensieve scene), <snip> <<


winkadup:
Do all past headmasters portraits appear on the wall of that office? 
Do you interact and respond to at least the Headmaster? If Dumbledore 
is dead, wouldn't he appear in a portrait on the wall in the 
Headmasters office? Or is there some time that must pass before this 
occurs?