A:AnswerIt includes the stool that is shown in the pictures, it has a light up marquee, if you pre-order it is shipped to you, there is no way of knowing if pre-orders will stop before the item is actually released (this is not claimed to be a limited production unit, this particular MvC package is just exclusive to Best Buy in the USA).
A:AnswerMarvel vs. Capcom (artwork) is the only model of the cabinet that is currently available to pre-order (the SE version of it appears to be a Best Buy exclusive for now...). The X-men vs. SF (artwork) model should be available soon. NOTE: there is a variance of games on each model but both include X-men vs. Street Fighter and Marvel vs. Capcom.
A:AnswerI was charged shortly after I ordered (on the first day it was available) and the money has not been returned to my account which indicates it was not simply a temporary hold of funds.
A:AnswerIt does not appear that it was an official 're-stock', even a single unit showing up in the Best Buy inventory chain (an unopened return) could show it as available once again. An actual re-stock would mean there is distribution happening and according to Arcade1Up this cabinet is not currently in production (it was a limited run for Best Buy). Now it does appear that Best Buy Canada might be expecting some inventory at some point (2021) on this cabinet but for now they have the X-men vs. Street Fighter with matched riser and light-up marquee/deck protector (which Best Buy US does not have). It's certainly possible that Best Buy thinks there is enough demand to place another order but that would take several months due to production and distribution.
A:AnswerNo it does not come in different colors as far as we know. Notice that picking different colors just goes to other Arcade1Up cabinets. The other 'version' of the cabinet is the "X-men vs Street Fighter" that is being sold at WM (in the US).