Lacking specific information from Springfield the Holster Manufacturers are your next best source of information. Prior to posting an opinion in your related post I visited Blade Tech's web page where I determined they manufacture and market holsters specific to the XD45 series and another set of comparable holsters specific to the XD9/40 series. I could but don't plan to visit Galco, Don Hume etc and will most likely find the same situation should I do so.
You might want to verify or disprove my finding by visiting those and some other Holster manufacturer web sites.
Edit: I should have mentioned the XDM Requires yet another model specific series of Holsters.