• Are all your changes properly documented?
  
  
• Are they mentioned in What’s New?
  
  
• Did you notice other changes with insufficient documentation?
  
  

• PEP 810: Explicit lazy imports for faster startup times
  
  
• PEP 814: Add
  Code:

  frozendict
  built-in type
  
  
• PEP 661: Add
  Code:

  sentinel
  built-in type
  
  
• PEP 799: A dedicated profiling package for organizing Python profiling tools
  
  
• PEP 799: Tachyon: High frequency statistical sampling profiler
  
  
• PEP 831: Frame pointers are enabled by default for improved system-level observability
  
  
• PEP 798: Unpacking in comprehensions
  
  
• PEP 686: Python now uses UTF-8 as the default encoding
  
  
• PEP 829: Package startup configuration files
  
  
• PEP 728:
  Code:

  TypedDict
  with typed extra items
  
  
• PEP 747: Annotating type forms with
  Code:

  TypeForm
  
  
• PEP 800: Disjoint bases in the type system
  
  
• PEP 782: A new
  Code:

  PyBytesWriter
  C API to create a Python bytes object
  
  
• PEP 803, 820, 793: Stable ABI for free-threaded builds and related C API
  
  
• The JIT compiler has been significantly upgraded, with 8-9% geometric mean performance improvement on x86-64 Linux over the standard interpreter, and 12-13% speedup on AArch64 macOS over the tail-calling interpreter
  
  
• The official Windows 64-bit binaries now use the tail-calling interpreter
  
  
• The official macOS binaries now install free-threading support by default
  
  
• Improved error messages
  
  
• More color
  
  
• (Hey, fellow core team member, if a feature you find important is missing from this list, let Hugo know.)
  
  

• Online documentation
  
  
• PEP 790, 3.15 release schedule
  
  
• Report bugs at https://github.com/python/cpython/issues
  
  
• Help fund Python directly (or via GitHub Sponsors) and support the Python community
  
  

Quote:“When they reached Circe’s house they found it built of cut stones, on
a site that could be seen from far, in the middle of the forest. There
were wild mountain wolves and lions prowling all round it—poor
bewitched creatures whom she had tamed by her enchantments and drugged
into subjection. They did not attack my men, but wagged their great
tails, fawned upon them, and rubbed their noses lovingly against
them. As hounds crowd round their master when they see him coming
from dinner—for they know he will bring them something—even so did
these wolves and lions with their great claws fawn upon my men, but the
men were terribly frightened at seeing such strange creatures.

“Presently they reached the gates of the goddess’s house, and as they
stood there they could hear Circe within, singing most beautifully as
she worked at her loom, making a web so fine, so soft, and of such
dazzling colours as no one but a goddess could weave. On this Polites,
whom I valued and trusted more than any other of my men, said, ‘There
is some one inside working at a loom and singing most beautifully; the
whole place resounds with it, let us call her and see whether she is
woman or goddess.’”