FreeRTOS 202604 LTS now available with enhanced security and MQTT v5.0

Name: FreeRTOS 202604 LTS now available with enhanced security and MQTT v5.0
Address: 171 N Aberdeen St Suite 400, Chicago, IL, 60607, US
Telephone: +1-866-931-0790

Published

May 1, 2026

FreeRTOS 202604 LTS Release

FreeRTOS 202604 LTS, a new Long Term Support release, is now available, providing feature stability, security updates, and critical bug fixes for two years.

New Features

Hardware Ports: New hardware ports added.
Security Hardening: Improved security features.
Memory Protection Unit (MPU) Support: Expanded MPU support, reducing MPU regions claimed by FreeRTOS.
coreMQTT v5.0.2: Added MQTT v5.0 protocol support with features like topic aliases and request/response patterns.
coreSNTP v2.0.0: Year 2038 readiness for validating TLS certificates and timestamp data.
Libraries: Verified for memory safety and MISRA-C compliance, enhancing robustness, portability, and reliability.

What to do

Review the migration guides for coreMQTT and coreSNTP.
Consider the FreeRTOS Extended Maintenance Plan for critical fixes on the previous LTS version.
Visit the FreeRTOS LTS page and FreeRTOS LTS GitHub repository for more information.

Source: AWS release notes

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