PEP 657 – Include Fine-Grained Error Locations in Tracebacks
PEP 654 – Exception Groups and except*
PEP 673 – Self Type
PEP 646 – Variadic Generics
PEP 680 – tomllib: Support for Parsing TOML in the Standard Library
PEP 675 – Arbitrary Literal String Type
PEP 655 – Marking individual TypedDict items as required or potentially-missing
bpo-46752 – Introduce task groups to asyncio
PEP 681 – Data Class Transforms
bpo-433030– Atomic grouping ((?>…)) and possessive quantifiers (*+, ++, ?+, {m,n}+) are now supported in regular expressions.
The Faster Cpython Project is already yielding some exciting results. Python 3.11 is up to 10-60% faster than Python 3.10. On average, we measured a 1.22x speedup on the standard benchmark suite. See Faster CPython for details.
Surprisingly not shown that obviously in the release announcements, but I guess that's fair since most of the changes will have no effect on 99.9999% of people.