Combien de temps faut-il pour que les modifications soient intégrées dans les versions officielles ?

Hi.

Reference to this issue: Users full name are shown in preview even with "enable names" off
More info: Travis CI - Test and Deploy Your Code with Confidence

Where is the bottleneck? When will this get through to an official release for update through admin?

cheers.

Official releases happen about every six months. All our customers are on beta. You should be too. Otherwise, you get to wait six months for changes.