This beta release adds Spring Boot 4.x support, previews Jakarta Data 1.1 capabilities, and enhances the Netty-based HTTP transport. It also updates Model Context Protocol Server 1.0 and introduces the option to use your own AES-256 key for Liberty password encryption.

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Open Liberty 25.0.0.12-beta introduces Spring Boot 4.x support with JAR and WAR deployment options, requiring Java 17+ and EE11 features. The release previews Jakarta Data 1.1 capabilities including entity projections, the @Is annotation, and Constraint subtype parameters for advanced filtering. Updates to the Model Context Protocol Server 1.0 add session management and improved endpoint discoverability. The Netty-based HTTP transport receives enhancements for HTTP/1.1, HTTP/2, WebSocket, JMS, and SIP communications. A new feature allows developers to provide their own Base64-encoded 256-bit AES keys for password encryption, improving startup performance and preparing for WebSphere migration.

SpringBoot 4.0, preview of Jakarta Data 1.1 and more in 25.0.0.12-beta- OpenLiberty.io