I mean that more in what was there before. But, it would be redone to make sense onto the building while also reflecting that side of the Music Plaza.
Its just a guess, but something does tell me they saved the painting of that side for last due to that they still have to add onto it.
EDIT: I have potentially more to back up what I am suggesting, as I point to a pic from
@AliciaStella and her blog post earlier this week.
If you notice, when they started painting the building with the grey coat of paint, you could see above one portion of the ride facade multiple spots marked out in rectangle spots. Seven to be precise. Now, lets look at the Twister facade.
In another spot, you can see that there are seven billboards onto the Twister Soundstage when it was operational at the time. It's also at a similar height to what it was before the additional buildings were added onto the soundstage for Fallon. It's the little things you may notice that could indicate why I bring it up in the first place.
I can be wrong, but I am sure to bet that we will see those murals back; either in a new color or exactly the same as it was before, just with the grey paint job that the building will be receiving to mask the building it was before..