The Developer Conference for the Oracle Platform will run in parallel to Oracle OpenWorld in San Francisco. Oracle Develop will feature keynotes, 130 technical sessions, and 75 hands-on labs . It will also include what used to be what used to be BEA World, which may be one reason that Oracle OpenWorld has moved from November to September.
Register for Oracle Develop only if you only want the technical content, or add it to your Oracle OpenWorld registration for only an additional $100.
Oracle Develop Information : http://www.oracle.com/openworld/2008/develop.html
Sessions : http://www.oracle.com/goto/newsletters/javadev/0608/cplan_orcl_develop.html