In these times I would go in betting on a 50/50 chance that will happen. The main difference between a sky suite and an aqua sky suite is the inclusion of the additional spa/fitness benefits.
With the delays, shortages and inflation we are currently experiencing it’s a very real possibility that the decor upgrades don’t happen on time. If so, you will most likely just get an apology or at best some OBC since you aren’t losing any access benefits. I am assuming Celebrity would consider those benefits to have a hard cost where decor would be considered a soft cost. It’s not as easy to value decor. If it’s a deal breaker then I would consider finding a cabin you know has been updated.