As a maintainer of a whole bunch of open source Python libraries, my favorite thing about a new Python release is that it signifies the end of support for an older one. In this case that's Python 3.10... which means that my libraries that aim to support every current Python version can finally start embracing features from Python 3.11!
Here's the "what's new in Python 3.11" document: https://docs.python.org/3/whatsnew/3.11.html