Spring Framework 2.5

Spring 2.5 enhances Spring 2.0 with many exciting new features, including:
Full Java 6 and Java EE 5 support (JDBC 4.0, JTA 1.1, JavaMail 1.4, JAX-WS 2.0)
Full-featured annotation-driven dependency injection, including support for qualifiers
Support for auto-detecting application components in the classpath and auto-configuring them as Spring managed objects
A new bean name pointcut element in AspectJ pointcut expressions
Built-in support for AspectJ load-time weaving based on the LoadTimeWeaver abstraction
New XML configuration namespaces context and jms, for maximum convenience
A completely revised integration test framework, with first-class support for JUnit 4 and TestNG
A new annotation-based controller model for Spring MVC supporting Servlet and Portlet environments
Extended SimpleJdbcTemplate functionality, including support for named SQL parameters
Officially certified WebSphere support
The packaging of Spring Framework jars as OSGi-compliant bundles out of the box
The ability to deploy a Spring ApplicationContext as a JCA RAR file, for headless application modules
CA 1.5 message endpoint management, for Spring-managed JMS and CCI message listeners
Please note that Spring 2.5 is still compatible with JDK 1.4.2+ and J2EE 1.3+. Java 1.4 users, for example on WebLogic 8.1 or WebSphere 5.1/6.0, are very welcome to upgrade to Spring 2.5 as well. We recommend putting the backport-util-concurrent jar on the classpath when running on Java 1.4, which allows Spring and your applications to benefit from significant concurrency enhancements.