I guess we'll have to agree to disagree here. The 0.22 number came from Elon in a video where he's standing in front of a prototype. The 0.24 number comes from an official post that has published charts related to production vehicles. I choose to believe the latter is our "best answer" to date.I'm not sure "revised" is the proper description. The article you cited is an excellent read about the physics of electric range. But it is not referring to a particular model or trim level. By saying "approximately" Elon can describe all Model S models while giving what might be a top line, lowest common denominator type of number.
The (optional) spoiler on the performance model (as an example) would likely change the Cd either up or down. We have no clue what the magnitude or direction of that change is but I've heard that an otherwise cosmetic spoiler can add or subtract Cd on the scale of 0.01.
My basic point stands. We don't have real data and Tesla has an incentive to under promise and over deliver on all of their claims. Likely they will only succeed in matching most of their claims, but it would not surprise me in the least if the Model S Performance turns out to accelerate faster than 4.4 0-60.