My guessing that the longer maintenance window is used to install the new Oracle APEX 3.0 on apex.oracle.com was not so wrong 
When you logon now, you will see that they have installed 3.0.0.00.18 on the regular apex.oracle.com trial environment and I’m sure the download will follow in the next days.
Congratulation to the APEX development team for the great job!!!
13. March 2007
Oracle APEX, News