Spring 6 (and Spring Boot 3) upgrades to use Jakarta EE 9+ and Java 17 as the new code baseline. Aligned with competitors such as Micronaut and Quarkus, Spring 6 adds built-in native build support, which was previously an experimental project. Additionally, many long-deprecated features have been removed in Spring 6.0.

• An Introduction to Spring RestClient API
• An Introduction to Spring Declarative HTTP Client
• Utilizing HTTP Service Interfaces to Create API Contracts Between Web Servers and Clients
• An Introduction to Spring Problem Detail Support

• Spring JDBC and Vibur DBCP
• An Introduction to Spring JdbcClient API

• Testing RESTful APIs with AssertJ-aware MockMvcTester
• Overriding Spring Beans with @TestBean

• An Introduction to Spring Declarative RSocket Client

• New in Spring 6.1: RestClient
• Spring Boot 3.5.0-M1 available now
• Initial AOT support in Spring Framework 6.0.0-M3
• Spring Framework 6.0.0-M2 and 5.3.15 available now
• A Java 17 and Jakarta EE 9 baseline for Spring Framework 6
• Spring Framework 6.0 M1 released