It is very possible that I am only justifying my recent purchase of the 32 XDR display, but what made up my mind was:
- Apple is very sporadic with display updates. If you look a their standalone displays there have been very few over the last 15 years (23 and 30 Cinema Display, then the 27 thunderbolt, then... nothing for a long time [unless you count their partnership with LG], then the 32). Maybe they will change the frequency of updates, but I wouldn't bet on it.
- The iMac seems to be much more of a priority for Apple, and their 'larger' iMac has reportedly been delayed. I would imagine they would put much more time / effort into this update than a display
- Supply constraints may slow down updates, even if they are planning a more ambitious update cycle
- Finally, I am still using my 30 Cinema Display, 15 years later (although as a secondary display). After using the XDR display for a week or so, I can't imagine wanting for anything more / better for a very long time. Maybe your use case may differ, but I can't imagine how they would update this display that would have a meaningful 'upgrade' that I would want to wait for (aside from a lower price, but Apple typically doesn't do that).