Yea I have noticed several "new" ones, which is what got me to thinking about what Hilton is trying to accomplish. New being brand new or a gut of a former building.
At the same time, in the USA, I feel like they have been taking some of the nicest DT's and turning them into Curio's. The Curio Waterstone in Boca Raton, FL comes to mind.
DoubleTree = Double Check is the best line I've heard for that brand.