I've seen conflicting reports, certainly. For my own sanity, I'll choose to keep hope alive for the time being. I don't want to spend the next three years with my expectations in the cellar, because that's not too exciting.
Personally, 150 AA's are to me outlandish in my opinion as it's unnecessary in how much it was rumored by MC if I recall correctly.
Will there be AA's? Yes. I do think it'll be a POTCS to where it's having AA's, and they may have one impressive one (Looking at you Davy); but it'll be mostly a screen-based attraction with distinctly massive sets and sculptures all throughout.
With Panasonic now partnering with WDI, I expect to see some fun imagery try to be displayed in the attraction; but that's just me.