This just isn’t a true statement anymore. Does HW2.5 with base autopilot offer green light chime? Does it offer vision only Autopilot?Do you have FSD?
If not, I'm not really sure why you'd worry about it -- HW3 doesn't add any value without FSD ...
... if you DO have the FSD package, the upgrade should be included at no cost.
Who knows what they’ll add in the future, but I would bet they won’t be coming to HW2.5.