Looking at what is not said, my interpretation is that previous Teslas will not be software-upgraded to full autonomy because the problem is harder than they previously thought.
Their LIDAR provider pulled out and now they're switching to camera-based CV and ending development of the LIDAR branch. I think they're hoping that this approach matures enough to match the capability of LIDAR in time for them to meet their market goals.
Either you're confused or I'm confused as to what you're talking about. Tesla has never used LIDAR and they actually leaned more heavily on CV until recently when they started using radar more extensively.
And in actually announcing this commitment now, that this one would be the final hardware, could also be just forced, as they need to sell it to all the people getting cars now with temporary less functionality.
