When they do launch the car, it's not just going to be a swanky thing to compete with BMW with a bunch of flashy touch UIs and half baked self driving.
It's going to be something that is a step change, something so far ahead of the competition they will be years ahead.
If they have deciding to delay till '28 that suggests it's both not ready, but maybe the market isn't either. If self driving is the head line feature, they will want it to actually be so far ahead of the competition it will appear like magic.
If there is truth to the article (I suspect the delay is real, un-convinced on the reasons suggested) then I don't think the will release one at all.