Tesla typically does not give notice when updates might occur. They usually just start putting the updates automatically into the production line as soon as they are able. Many customers have gotten updates that they did not expect, just because they began coming down the line prior to their delivery. People always want the latest and greatest. Lots of posts from people waiting for this or that. Sometimes they even raise of lower their prices for one reason or another. Same with OTA software and feature updates. They do not publish what is in the updated ahead of time, not explain all the details after the updates, just generalized notes on new features.