Why "Out with the Old, In with the New" ?
They already said they’re moving away from supporting dungeons in favor of raids. I wouldn’t expect a great deal of anything new or even fix-wise for dungeons. Personally, I don’t see dungeons going away. Currently they’re still needed for legendary weapons and the old way of crafting is still the most viable for a lot of people who already have a lot of time invested. The other thing with dungeons is they’re more at an intermediate level as opposed to the advanced level of raids. Many of those who leave for raids will eventually return simply because the larger teams and more difficult content won’t be to everyone’s taste. Once the new and shininess if the raids wear off, I think dungeons will still remain popular simply because it will be MUCH easier to put a team together.
Of course, we all know they will also nerf the difficulty of the raids once the shininess wears off too because no one will be doing them, much like they did with Orr long ago and like they did with the redesigned Tequatl and the 3-headed Wurm events.