Newest 76 Beta version is already available for users all around the world. Chrome 76 features an amount of different user-affecting changes such as default dark mode for some sites.
As Microsoft’s Edge will be a Chromium based browser, we can easily say it is a matter of time for Edge to follow Chrome’s 76 update steps.
Is currently continues to run Flash Player on a per-site basis on a user approval. Firefox will remembers the site that was authorized if the user checks marked "Remember this decision".