The old SCBCD is now called OCPBCD (Oracle Certified Professional,
Java EE 5 Business Component Developer v. CX-310-091) and is still available. There is no difference in the exam. It is the same exam with a different name.
The new exam is called OCE-EJBD (Oracle Certified Expert, Java Platform, Enterprise Edition 6 Enterprise JavaBeans Developer v. CX-310-093 ) and it does not include JPA.
Check this out for more details:
http://education.oracle.com/PLEASE/web_prod-plq-dad/db_pages.getpage?page_id=402&p_nl=JJAV&p_org_id=1001&lang=US
Replace PLEASE in the link above with letter p l s Apparently JavaRanch does not allow p l s abbreviation.