From what I have heard, this is in part true. While the replacement is by no means going to be a people eater on a Mansion level, it is supposed to raise the current hourly capacity of stitch (which, to my knowledge, is 1080 ideally), significantly. Also, keep in mind that Stitch is by no means fulfilling its already designated capacity due to a lack of popularity, hence the main purpose of this attraction, is to be interesting, and actually draw people in.Any Stitch replacement that may or may not happen wouldn't be a "people eater"
Sadly this attraction, like all things in the WDI pipeline (sans Miss Fortune Falls), is based on an IP. And whether or not it fits with the Tommorowland theme... That is up to interpretation.I understand if you can't say anything about it, but do you know if it will be an IP or something original to fit in the original theme of Tomorrowland?