ooooh, Harry's gonna take out a whole nother court then lol
Most likely.
Maybe even all of them at once
Between the bit about wizards and whamps having some reveal coming up and the comment about how the results of soulfire+necromancy are commonly running around in the Dresden Files I expect that any death of the White Court will tie into that rather than every vampire everywhere dying because Drakul got shanked.
Though the collective blue balls of the Jade Court getting annihilated before they even appear after more than a decade of speculation would be hilarious.