Update doc

Author: Batiste Bieler

CHANGELOG.md

@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [1.3.0] - 2026-03-05
+## [1.3.0] - 2026-xx-xx
 
 This release continues to strengthen the type system and developer experience with immutability
 patterns, improved type narrowing, and better error diagnostics.