Thank you for your response.
I’m going to be landing next week so I hope the plan is delayed, otherwise it might delay my landing by a month or more.
A different report I read or heard (can't recall) said it would not take effect for about two weeks. But do not rely on that, there will be an announcement next week, apparently.
I think (and hope) that it will take effect with some reasonable period of time after announcement (although there will certainly be complaints and inconvenience for many).