The government do what it always do... they will decide something, whatever, whenever, and they will make it official one or two days before... as usual. All the "hype" before and around is made by "the media" and all the people who push this topic in social media again and again. I saw the first complaints from travellers on the 1st this month, because they got only a 30 day stamp on entry... 😁
Nope... that's not how it works... sadly. After that mentioned date you don't have a valid visa anymore, so... enter on that day will give you 365 days for the last time on this visa. An O/A is good for maximum (almost) two years... that's it.