+- **Remove Python 2 support** (#2740)
+- Do not accept bare carriage return line endings in pyproject.toml (#2408)
+- Improve error message for invalid regular expression (#2678)
+- Improve error message when parsing fails during AST safety check by embedding the
+ underlying SyntaxError (#2693)
+- Fix mapping cases that contain as-expressions, like `case {"key": 1 | 2 as password}`
+ (#2686)
+- Fix cases that contain multiple top-level as-expressions, like `case 1 as a, 2 as b`
+ (#2716)
+- Fix call patterns that contain as-expressions with keyword arguments, like
+ `case Foo(bar=baz as quux)` (#2749)
+- No longer color diff headers white as it's unreadable in light themed terminals
+ (#2691)
+- 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)
+- 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)
+
+### Packaging
+
+- All upper version bounds on dependencies have been removed (#2718)
+- `typing-extensions` is no longer a required dependency in Python 3.10+ (#2772)
+
+### Preview style
+
+- Introduce the `--preview` flag with no style changes (#2752)
+
+### Integrations
+
+- Update GitHub action to support containerized runs (#2748)
+
+### Documentation
+
+- Change protocol in pip installation instructions to `https://` (#2761)
+
+## 21.12b0
+
+### _Black_
+
+- Fix determination of f-string expression spans (#2654)
+- Fix bad formatting of error messages about EOF in multi-line statements (#2343)
+- Functions and classes in blocks now have more consistent surrounding spacing (#2472)
+- `from __future__ import annotations` statement now implies Python 3.7+ (#2690)
+
+#### Jupyter Notebook support
+