Well, I would argue that a new Uldaman wing is a revamped Uldaman in the same way the new Karazhan is revamped but also a new part of it and seperate from the old raid instance.
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Also, doing my weekly Dragonsoul farm I thought about the classic drake/dragon models. Do we think they will get an hd update with Dragonflight? We know that Alextrasza and Kaleg are atleast getting new models, so I would guess the other classic "adult dragon" will get the update too. What about drakes? I imagine the reason why we get the dragonriding customizations is that they can re-use the system to build unique npc's for the dragon isles - so will the classic drake npc and mount models be forever stuck in the past while f.e. the drakonids and other stuff will be updated? Will they just use the dragonriding "drake" mount for any new drakes? Or will we get a bunch of beautiful hd classic drakes with the pre-patch?