Spring Dynamic Modules 1.0 supports JDK level 1.4 and above and OSGi R4 and above. Bundles deployed for use with Spring Dynamic Modules should specify "Bundle-ManifestVersion: 2" in their manifest (OSGi R4). We test against Equinox 3.2.x, Felix 1.0.3+, and Knopflerfish 2.1.x as part of our continuous integration process.