Add v3.120.1

Author: DanTup

_releases/v3.120.md

@@ -4,6 +4,11 @@ sort_order: v0003_0120
 excerpt: "Improved Flutter SDK installation, Widget Preview improvements, experimental test tracking, ..."
 ---
 
+# v3.120.1 _2025-10-21_
+
+- [#5717](https://github.com/Dart-Code/Dart-Code/issues/5717): The Flutter Widget Preview is now enabled for the latest Flutter beta by default, without needing the `experimentalFlutterWidgetPreview` flag.
+- [#5672](https://github.com/Dart-Code/Dart-Code/issues/5672): The Flutter Widget Preview icon has been updated to better match other Flutter sitebar icons.
+
 # v3.120.0 _2025-09-30_
 
 ## Flutter