>>28243111I highly doubt that they'd go to the trouble of changing the designs simply because they got leaked, especially after already having finalized the designs with the various information they likely decided upon.
These images, which could possibly be the final evolutions, appear to be reference sheets for the anime, hence the inclusion of Ash and Pikachu into one of the images. This means that the designs in the games were mostly finalized, and the anime for Sun/Moon has already started production.
Now, they COULD potentially add something here or there to the final evolutions if these are in fact the final evolutions, but they wouldn't completely overhaul them at this late of a stage.
