Hussar
Legend
It certainly has in the past. Every year, the AL season follows whatever the big adventure/setting of that year. Considering how much of a marketing push AL is for promoting D&D, it would probably be a bad idea NOT to do that.I suppose the operative question then, one which I at least cannot answer, is: does publishing a campaign setting obligate Wizards to include it in organized play?
And, again, why worry about hypotheticals? The fact is, WotC ties every year's AL series to the big release. I guess the counter question would be, why release something that won't be included in that year's Adventure League season? What's the upside here? Why wouldn't it be included?
Oh, right, because including a setting with slavery pushes people away from the hobby.