Thanks for bringing this to my attention. It's back now. However this should not prevent you from building or running your application as the schema are always packaged in the appropriate jar files and hence on your project classpath. I suggest you check your build or IDE configuration and make sure the schema is resolved correctly. For instance in STS, you should enable Preferences->Spring->Beans Support->Namespaces "Load NamespaceHandlers and XSD's from project's classpath".
David Turanski
SpringSource Senior Software Engineer