Updated docs

Author: Trenza1ore

docs/misc/changelog.rst

@@ -3,7 +3,7 @@
 Changelog
 ==========
 
-Release 2.7.1 (2025-08-01)
+Release 2.7.1a1 (WIP)
 --------------------------
 **Unify the dtype decision logic for all buffer classes**
 
@@ -13,6 +13,7 @@ New Features:
 
 Others:
 ^^^^^^^
+- Added an additional ``BufferDTypes`` dataclass to ``stable_baselines3/common/buffers.py`` for representing buffer datatypes (@Trenza1ore)
 - Added an additional ``test_buffers.py::test_buffer_dtypes`` which tests the `dtype` of `RolloutBuffer` and `DictRolloutBuffer` (@Trenza1ore)
 
 Release 2.7.0 (2025-07-25)