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.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.
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).