I understand. I know that Python 3.4 is way past feature freeze.

But if we document the new stuff in the documentation, saying "Added to Python 3.4.4", people would know about and be able to use the new stuff. And we won't break people's code. In fact, people might benefit from this particular new feature.

People's Python 3.4 code like  webbrowser.get("chrome")  would then start to work, plus they'd benefit from this new stuff added by Brandon Milam.

Don't you find that a great thing to be?