# Change Log
-## _Unreleased_
+## Unreleased
+
+### _Black_
+
+- Improve error message for invalid regular expression (#2678)
+- Fix mapping cases that contain as-expressions, like `case {"key": 1 | 2 as password}`
+ (#2686)
+
+## 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)
+
+#### Jupyter Notebook support
+
+- Cell magics are now only processed if they are known Python cell magics. Earlier, all
+ cell magics were tokenized, leading to possible indentation errors e.g. with
+ `%%writefile`. (#2630)
+- Fix assignment to environment variables in Jupyter Notebooks (#2642)
+
+#### Python 3.10 support
+
+- Point users to using `--target-version py310` if we detect 3.10-only syntax (#2668)
+- Fix `match` statements with open sequence subjects, like `match a, b:` or
+ `match a, *b:` (#2639) (#2659)
+- Fix `match`/`case` statements that contain `match`/`case` soft keywords multiple
+ times, like `match re.match()` (#2661)
+- Fix `case` statements with an inline body (#2665)
+- Fix styling of starred expressions inside `match` subject (#2667)
+- Fix parser error location on invalid syntax in a `match` statement (#2649)
+- Fix Python 3.10 support on platforms without ProcessPoolExecutor (#2631)
+- Improve parsing performance on code that uses `match` under `--target-version py310`
+ up to ~50% (#2670)
+
+### Packaging
+
+- Remove dependency on `regex` (#2644) (#2663)
+
+## 21.11b1
+
+### _Black_
+
+- Bumped regex version minimum to 2021.4.4 to fix Pattern class usage (#2621)
+
+## 21.11b0
### _Black_
- Warn about Python 2 deprecation in more cases by improving Python 2 only syntax
detection (#2592)
+- Add experimental PyPy support (#2559)
+- Add partial support for the match statement. As it's experimental, it's only enabled
+ when `--target-version py310` is explicitly specified (#2586)
+- Add support for parenthesized with (#2586)
+- Declare support for Python 3.10 for running Black (#2562)
+
+### Integrations
+
+- Fixed vim plugin with Python 3.10 by removing deprecated distutils import (#2610)
+- The vim plugin now parses `skip_magic_trailing_comma` from pyproject.toml (#2613)
## 21.10b0
- Document stability policy, that will apply for non-beta releases (#2529)
- Add new `--workers` parameter (#2514)
- Fixed feature detection for positional-only arguments in lambdas (#2532)
-- Bumped typed-ast version minimum to 1.4.3 for 3.10 compatiblity (#2519)
+- Bumped typed-ast version minimum to 1.4.3 for 3.10 compatibility (#2519)
- Fixed a Python 3.10 compatibility issue where the loop argument was still being passed
even though it has been removed (#2580)
- Deprecate Python 2 formatting support (#2523)
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