As of last week, nobody I talked to at the Rivian factory had ever seen the manual cover. If that's part of your configuration, you're guaranteed to wait for a while
Tutuapp 9Apps Showbox
Note that they will “begin rolling out”, which gives them a lot of leeway and could be a process that takes months for all preorder holders to receive their updated estimate. My original estimate was first half of 2023 (Sep 21 preorder) and being that far out means a lot of things can change...