Update Java-related links and information

README.md

@@ -96,8 +96,9 @@ The user `settings.json` is auto-configured at startup by `Java Extension Pack A
 
 (*a) The `settings.json` [can be configured by project (workspace)](https://code.visualstudio.com/docs/getstarted/settings).<br>
 (*b) The `java.configuration.runtimes` that best matches this version will be used.
-* JEP 182: [Retiring javac -source and -target](https://openjdk.org/jeps/182) / JEP 247: [Compile for Older Platform Versions](https://openjdk.org/jeps/247)<br>
-* ℹ️ [Enabling Java preview features](https://github.com/redhat-developer/vscode-java/wiki/Enabling-Java-preview-features)
+* JEP 182: [Retiring javac -source and -target](https://openjdk.org/jeps/182) / JEP 247: [Compile for Older Platform Versions](https://openjdk.org/jeps/247)
+* Since Spring Boot 3.1, Maven [`<java.version>` value is set to `<maven.compiler.release>`](https://github.com/spring-projects/spring-boot/pull/34365).
+* [Enabling Java preview features](https://github.com/redhat-developer/vscode-java/wiki/Enabling-Java-preview-features)
 
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