From what I understand currently, a22 will drop to PC users, and then probably a month later it will drop to consoles. I personally feel that it is likely to be happening early 2024, but I am just guessing based on what I can see from development. This estimate is in no way supported by TFP.
It will not be an update to the existing version. I'm not sure if they will offer it as a free download or if it will require purchasing. Most likely the latter, though I have heard they may be investigating the ability to offer discounts to verified purchasers of the previous version.