There hasn’t really been any official statement that confirms whether it’ll support Xbox or not. But chances are, if they are planning to release it on the MSFS Marketplace, it’s very likely that it can work on Xbox. But like I said, I couldn’t find any statement to confirm this.
But that being said, I’m not quite sure what makes the A320 that appealing. I mean, we already have the A320neo as a default aircraft, and while that doesn’t say as much, we already have the A32NX mod which is getting closer to the real A320neo.
While it’s nice to have the variety, I personally just doesn’t feel justified to have the aircraft. Especially since there are other airline classes that we’re lacking right now, like a widebody A350, and double-decker A380. It just feels redundant to have another narrow-body airbus that’s practically the same aircraft as we currently have at the moment.