Always include appropriate version annotations when documenting new features or changes in behavior. Use `.. versionadded::` for new features and `.. versionchanged::` for modifications to existing functionality. Place these annotations immediately after the feature's first mention in the documentation. Example: ```rst .. class:: NewFeature A new feature added to Django. .. versionadded:: 6.0 .. class:: ExistingFeature An existing feature with modified behavior. .. versionchanged:: 6.0 Added support for new parameter and changed default behavior. ``` Key guidelines: - Add version annotations for all new features, methods, classes, and settings - Use versionchanged for behavioral changes, new parameters, or deprecations - Place annotations before any detailed description or examples - Include brief description of changes with versionchanged - Target the next major version for changes in development This helps users understand when features were introduced or modified, making documentation more maintainable and useful for different Django versions.