Spring Framework 6.1 and Spring Boot 3.2 run on Java 21, make concurrent programming simpler and more efficient with virtual threads, and initially support “Scale to Zero” startup time with CRaC.

You can test, document and generate RESTful API code for your Java apps when you add OpenAPI's Swagger UI to Spring Boot projects.

Drotbohm also noted that Spring Framework 6 and Spring Boot 3 will probably not fully support all those projects and libraries with native Java and observability at launch.

Spring Boot's ability to auto-configure the development environment so that developers can quickly integrate databases, Kafka queues, cloud services and AI models into their apps is one of the popular ...