Death Knights Starting Quests in Cataclysm?

[Epar]

The Lich King is seen various times in these quests, as well as other undead leaders that we've killed off in this expansion. My question is, has Blizzard released any information as to changing the first death knight chain of quests in Cataclysm?

This is me presuming that the current Lich King will actually be vanquished in some way and just trying to imagine what Blizzard has planned for his death changing the playable death knights.

[Uroboros]

The Death Knight starting quests are phased. So, when you start a Death Knight, it's as if the Lich King has not been killed.