When the change is applied on each Wikipedia?
As far as I can see, it's deployed now. Deployment to Wikipedia in most languages usually happens on Thursday late in the evening European time, and you wrote your messages shortly before that.
Recently it was also a holiday season in many countries, so deployments in general were reduced.
You can see the full deployment schedule for Wikimedia projects here: https://wikitech.wikimedia.org/wiki/Deployments