I received an email that the online Schedule Builder is live. I might regret saying this but, based on an initial glance, it's an improvement on previous efforts. (Which wouldn't be difficult!)
For anyone who is interested in seeing some of the cool OEM12c Performance Page stuff, my session is :-
Session ID: CON5389
Session Title: Oracle Enterprise Manager 12c Cloud Control Performance Pages: Falling in Love Again
Venue / Room: Moscone West - 3014
Date and Time: 10/2/12, 17:00 - 18:00
I'm looking forward to it!
(Updated Later - wow, it really is a vastly improved Schedule Builder!)