OK, I'll answer that one myself: yes indeed, the Oracle server now includes an HTTP server in addition to the Apache HTTP server.
So here's my follow-up question: I did a quick Google search and the information I've gathered so far seems to say that this technology might not yet be Production-ready (no dates on the articles, so I don't know how old they are...). Has anyone had experience with XDB/EPG in a Production environment? Thanks, Chris.