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Spring Boot 3.5 Loses Community Support on June 30, 2026 Amid Complex Upgrade Path

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Spring Boot 3.5.x and Spring Framework 6.2 will both reach end of community support on June 30, 2026, ending free patches, CVE fixes, and maintenance releases. Organizations running these versions under compliance frameworks such as SOC 2, PCI-DSS, or FedRAMP face potential security audit findings if they remain on unsupported software. The successor, Spring Boot 4, is not a routine upgrade — developers have catalogued over 115 breaking changes, including the removal of Undertow, a Jackson 3 migration, and renamed testing annotations. Teams have three broad options: migrate fully to Spring Boot 4, purchase VMware Tanzu extended commercial support, or accept the risk of running an unsupported stack. Architects are advised to begin planning immediately, as migration efforts for large codebases could consume weeks to months of engineering capacity.

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Spring Boot 3.5 Loses Community Support on June 30, 2026 Amid Complex Upgrade Path · ShortSingh