Ricky Mondello:

When Safari 10 ships this fall, by default, Safari will behave as though common legacy plug-ins on users’ Macs are not installed.

On websites that offer both Flash and HTML5 implementations of content, Safari users will now always experience the modern HTML5 implementation, delivering improved performance and battery life. This policy and its benefits apply equally to all websites; Safari has no built-in list of exceptions. If a website really does require a legacy plug-in, users can explicitly activate it on that website.

If no other reason, I’ll look forward to Safari 10 for this alone.