Prepare Changelog for New Release

Author: oleibman

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)
 and this project adheres to [Semantic Versioning](https://semver.org). This is always true of the master branch. Some earlier branches, including the branch from which you are reading this file, remain supported and security fixes are applied to them; if the security fix represents a breaking change, it may have to be applied as a minor or patch version.
 
-## TBD - 2.1.14
+## 2006-01-10 - 2.1.14
 
 ### Changed
 
@@ -25,7 +25,7 @@ and this project adheres to [Semantic Versioning](https://semver.org). This is a
 
 - Except for security changes, no further maintenance will be applied to this branch.
 You are encouraged to upgrade to a maintained branch as soon as possible.
-Maintained branches are master (preferred - version is 5.2.0 as of the date when this is being written), release390 (current version is 3.10.1), and release222 (2.4.1).
+Maintained branches are master (preferred - version is 5.4.0 as of the date when this is being written), 3.10.x (current version is 3.10.3), and 2.4.x (2.4.3).
 - Of particular note is that this branch should not run under Php 8.5+, and will *not* be updated to avoid deprecation notices introduced with Php 8.5.
 
 ## 2025-08-10 - 2.1.12

README.md

@@ -16,7 +16,7 @@ This branch (2.1.x) is *not* the latest version of PhpSpreadsheet, and may there
 
 Except for security changes, no further maintenance will be applied to this branch.
 You are encouraged to upgrade to a maintained branch as soon as possible.
-Maintained branches are master (preferred - version is 5.3.0 as of the date when this is being written), 3.10.x (current version is 3.10.2), and 2.4.x (2.4.2).
+Maintained branches are master (preferred - version is 5.4.0 as of the date when this is being written), 3.10.x (current version is 3.10.3), and 2.4.x (2.4.3).
 
 Of particular note is that this branch should not run under Php 8.5, and will *not* be updated to avoid deprecation notices which will be introduced with Php 8.5.