Following Japanese translation is updated in sync to in English 6u10.
http://java.sun.com/javase/ja/6/docs/ja/api/index.html

But 1 package added with regard to JAX-WS update is not included.
javax.xml.ws.wsaddressing

The same package is missing in Chinese translation, but I'm not sure if they are translation based on Java 6 FCS, or later one with JAX-WS 2.1.