Ahh good to know. Didn't realize this. I thought these were rolling out over the last week. This is nuts.
FWIW when they don't do a mass rollout there's usually a good reason. Tesla is not the kind of company that sits on well baked code. Keep an eye on EV-FW to get an idea of what types of cars are getting the update, and use the "raw data" view to see if it's coming from wifi, 3G, or service center.