Add release notes for 2025.12.1 (#990)

Co-authored-by: scott-routledge2 <[email protected]>
Co-authored-by: Todd A. Anderson <[email protected]>

Author: 3 people

docs/docs/release_notes/2025.12.md

@@ -28,3 +28,29 @@ This release, we are excited to add Join Filters in the plan optimizer, signific
 - Fix for nested join.
 - Fixed remove unused column pass to keep column references alive in conjunction with duckdb version upgrade.
 - Better support for operations that result in empty dataframes.
+
+## 2025.12.1
+
+### ✨ New Features
+
+- Support negative n in df.head()
+- Handle tuple column selection in df.loc
+
+### 🏎️ Performance Improvements
+
+- Improved performance of pd.to_datetime()
+
+### 🐛 Bug Fixes
+
+- Removed support for AWS Bedrock's EOL titan-text models in the DataFrame Library AI Toolkit
+- Fixed overflow error when estimating the size of large Parquet datasets
+- Allow ranks to send concurrent async messages to each other during shuffle
+- Fix output Series.name for pd.to_datetime()
+- Cast binary operation result to output type properly to avoid downstream errors
+- Keep input timestamp unit in Series.dt.tz_localize()
+- Fix slicing with negative steps
+- Avoid double cast for integer division
+
+### ⚙️ Dependency Changes
+
+- Upgrade to Numba 0.63.1