Let's analyze this for a second, I know in the grand scheme of things it really doesn't matter, nobody cares about truth they just care about what they can spew on the internet (case in point, the autopilot jail thread, one guy suggested that we shouldn't inject facts, just trick people into dancing around the car). We're calling this a rolling release, where Tesla sends out to the fleet at large, let's say 10-15% of the fleet in batches. They keep this up until everyone gets the release, or they stop and restart once they fix any last minute bugs. This is what is currently happening with Model S/X and version 2019.4.2. Now look at Model 3 with the 2019.5.x "rollout". A random selection of all Model 3 owners, which just happens to all be "randomly" selected in California, especially those updated to 2019.5.4 updated today. Plus looking at YouTube, somehow this group of people just magically and randomly received the update, just in time for press. This group comprises less than 2% of the total Model 3 fleet (the percent average from TeslaFi is a good marker regarding the entire fleet, even though they don't include everyone, we're talking averages here). What you're saying is that Tesla changed how they do rolling releases with the Tesla Model 3 and now send it out in 1-2% batches.
Does it really matter? Not really, we all have to wait anyways, and I guess Tesla can do no wrong. Is 2019.5.x released like people are saying? It's released to testers. I'd like to see somewhere, anywhere where non testers have the features and are posting about them, but it can't be done because it's not in general release. It's a great feature for a great car (I love my Model 3), but it's been touted as already in our vehicles protecting us which it is not and may not be for weeks to come given the reported bugs. Heck, I'd sign-up for the beta if I could but you can't, you can't even request releases. Anyways, go forth and believe whatever you want. I'll keep watching the same 1.8% of the Model 3 fleet getting each bug fix during the beta test, and then suddenly hundreds of updates will happen and the percent install base will change in batches signaling a rolling release to the public. It's not like people believe in facts anyways nowadays, so carry on.