Larian is having trouble fitting Baldur’s Gate III on the Xbox Series S, the lower-priced and lower-powered console in Microsoft’s ninth-generation lineup.
I was looking up more information on why there’s such an issue getting BG3 on Xbox, and found this article with a lot more detail on the topic.
EDIT: The issue isn’t graphics or frame rate; it’s memory. The article goes into detail.
They may or may not have the requirement anymore, but they definitely used to have this parity clause as well. Then if it came to other platforms first and Xbox later, the Xbox version had to have bonus content beyond the original release.
I also thought they might have such a requirement but I was unable to find a source that confirms (or even mentions) it. Definitely still possible though.
I remember it coming up on podcasts back during the 360 era, so that was long enough ago that things may have changed.