The directory structure tree in Java SE 6 installation instructiopn still referring to jdk1.5.0:

http://java.sun.com/javase/6/docs/technotes/tools/solaris/jdkfiles.html
http://java.sun.com/javase/6/docs/technotes/tools/linux/jdkfiles.html

(End users can find these links in the "Installation Instructions" found in public Java SE 6 ea download page: http://java.sun.com/javase/downloads/ea.jsp)