- Tuple unpacking on `return` and `yield` constructs now implies 3.8+ (#2700)
- Unparenthesized tuples on annotated assignments (e.g
`values: Tuple[int, ...] = 1, 2, 3`) now implies 3.8+ (#2708)
+- Allow setting custom cache directory on all platforms with environment variable
+ `BLACK_CACHE_DIR` (#2739).
+- Text coloring added in the final statistics (#2712)
- For stubs, one blank line between class attributes and methods is now kept if there's
at least one pre-existing blank line (#2736)
- Verbose mode also now describes how a project root was discovered and which paths will
be formatted. (#2526)
+- Speed-up the new backtracking parser about 4X in general (enabled when
+ `--target-version` is set to 3.10 and higher). (#2728)
+- Fix handling of standalone `match()` or `case()` when there is a trailing newline or a
+ comment inside of the parentheses. (#2760)
+- Black now normalizes string prefix order (#2297)
+- Add configuration option (`python-cell-magics`) to format cells with custom magics in
+ Jupyter Notebooks (#2744)
+- Deprecate `--experimental-string-processing` and move the functionality under
+ `--preview` (#2789)
### Packaging
- All upper version bounds on dependencies have been removed (#2718)
+- `typing-extensions` is no longer a required dependency in Python 3.10+ (#2772)
+- Set `click` lower bound to `8.0.0` (#2791)
+
+### Preview style
+
+- Introduce the `--preview` flag (#2752)
+- Add `--experimental-string-processing` to the preview style (#2789)
### Integrations
- Update GitHub action to support containerized runs (#2748)
+### Documentation
+
+- Change protocol in pip installation instructions to `https://` (#2761)
+- Change HTML theme to Furo primarily for its responsive design and mobile support
+ (#2793)
+
## 21.12b0
### _Black_