This is my favorite change in this release and cause me to upgrade to the RC version a few days ago. It's a huge QoL improvement for so much code I write.
I'm also a fan of the walrus operator. These are small, rare, clear, useful, idiomatic new features, in my opinion.
I personally feel walrus operator is a much more prominent improvement, considering how prevalent it can be used (like, I use it in almost every single `re.search()`, and at least half of conditional list comprehensions and `while`), while I don't find the old way of updating dict (`{a, b}` etc.) too bad.
I'm also a fan of the walrus operator. These are small, rare, clear, useful, idiomatic new features, in my opinion.