Sourced from typing-extensions's releases.

4.15.0

No user-facing changes since 4.15.0rc1.

New features since 4.14.1:

• Add the @typing_extensions.disjoint_base decorator, as specified in PEP 800. Patch by Jelle Zijlstra.
• Add typing_extensions.type_repr, a backport of annotationlib.type_repr, introduced in Python 3.14 (CPython PR #124551, originally by Jelle Zijlstra). Patch by Semyon Moroz.
• Fix behavior of type params in typing_extensions.evaluate_forward_ref. Backport of CPython PR #137227 by Jelle Zijlstra.

4.15.0rc1

• Add the @typing_extensions.disjoint_base decorator, as specified in PEP 800. Patch by Jelle Zijlstra.
• Add typing_extensions.type_repr, a backport of annotationlib.type_repr, introduced in Python 3.14 (CPython PR #124551, originally by Jelle Zijlstra). Patch by Semyon Moroz.
• Fix behavior of type params in typing_extensions.evaluate_forward_ref. Backport of CPython PR #137227 by Jelle Zijlstra.

4.14.1

Release 4.14.1 (July 4, 2025)

• Fix usage of typing_extensions.TypedDict nested inside other types (e.g., typing.Type[typing_extensions.TypedDict]). This is not allowed by the type system but worked on older versions, so we maintain support.

4.14.0

This release adds several new features, including experimental support for inline typed dictionaries (PEP 764) and sentinels (PEP 661), and support for changes in Python 3.14. In addition, Python 3.8 is no longer supported.

Changes since 4.14.0rc1:

• Remove __or__ and __ror__ methods from typing_extensions.Sentinel on Python versions <3.10. PEP 604 was introduced in Python 3.10, and typing_extensions does not generally attempt to backport PEP-604 methods to prior versions.
• Further update typing_extensions.evaluate_forward_ref with changes in Python 3.14.

Changes included in 4.14.0rc1:

• Drop support for Python 3.8 (including PyPy-3.8). Patch by Victorien Plot.
• Do not attempt to re-export names that have been removed from typing, anticipating the removal of typing.no_type_check_decorator in Python 3.15. Patch by Jelle Zijlstra.
• Update typing_extensions.Format, typing_extensions.evaluate_forward_ref, and typing_extensions.TypedDict to align

... (truncated)

Sourced from typing-extensions's changelog.

Release 4.15.0 (August 25, 2025)

No user-facing changes since 4.15.0rc1.

Release 4.15.0rc1 (August 18, 2025)

• Add the @typing_extensions.disjoint_base decorator, as specified in PEP 800. Patch by Jelle Zijlstra.
• Add typing_extensions.type_repr, a backport of annotationlib.type_repr, introduced in Python 3.14 (CPython PR #124551, originally by Jelle Zijlstra). Patch by Semyon Moroz.
• Fix behavior of type params in typing_extensions.evaluate_forward_ref. Backport of CPython PR #137227 by Jelle Zijlstra.

Release 4.14.1 (July 4, 2025)

• Fix usage of typing_extensions.TypedDict nested inside other types (e.g., typing.Type[typing_extensions.TypedDict]). This is not allowed by the type system but worked on older versions, so we maintain support.

Release 4.14.0 (June 2, 2025)

Changes since 4.14.0rc1:

• Remove __or__ and __ror__ methods from typing_extensions.Sentinel on Python versions <3.10. PEP 604 was introduced in Python 3.10, and typing_extensions does not generally attempt to backport PEP-604 methods to prior versions.
• Further update typing_extensions.evaluate_forward_ref with changes in Python 3.14.

Release 4.14.0rc1 (May 24, 2025)

• Drop support for Python 3.8 (including PyPy-3.8). Patch by Victorien Plot.
• Do not attempt to re-export names that have been removed from typing, anticipating the removal of typing.no_type_check_decorator in Python 3.15. Patch by Jelle Zijlstra.
• Update typing_extensions.Format, typing_extensions.evaluate_forward_ref, and typing_extensions.TypedDict to align with changes in Python 3.14. Patches by Jelle Zijlstra.
• Fix tests for Python 3.14 and 3.15. Patches by Jelle Zijlstra.

New features:

• Add support for inline typed dictionaries (PEP 764). Patch by Victorien Plot.
• Add typing_extensions.Reader and typing_extensions.Writer. Patch by Sebastian Rittau.
• Add support for sentinels (PEP 661). Patch by Victorien Plot.

... (truncated)

• 9d1637e Prepare release 4.15.0 (#658)
• 4bd67c5 Coverage: exclude some noise (#656)
• e589a26 Coverage: add detailed report to job summary (#655)
• 67d37fe Coverage: Implement fail_under (#654)
• e9ae26f Don't delete previous coverage comment (#653)
• ac80bb7 Add Coverage workflow (#623)
• abaaafd Prepare release 4.15.0rc1 (#650)
• 9810405 Add @disjoint_base (PEP 800) (#634)
• 7ee9e05 Backport type_params fix from CPython (#646)
• 1e8eb9c Do not refer to PEP 705 as being experimental (#648)
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