# New Features ## **Major Framework Upgrade** Harmony Suite has been upgraded from **Spring Framework 5.x to 6.x**, delivering improved performance, long‑term platform support, and enhanced compatibility with modern Java standards.\ This upgrade also resolves a number of security vulnerabilities present in older framework versions, strengthening the overall security posture of the platform. Please note since Harmony Suite version 4, the minimum supported java version is 17 and the minimum supported tomcat version is 10. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.mastersoftgroup.com/harmony-suite/release-notes/version-4.0.0/new-features.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.