Our free "development only" hosted site has been upgraded to the latest build of APEX 4.0. This is a pre-production build and is not available for download.
Upgrading apex.oracle.com is one of our big milestones with any new release. We always do this before releasing the software to production for various reasons. This service gets over 3 million page views a week, contains over 30,000 applications of which at least 2,500 are active in any week, and we have a broader range of applications being used and abused. This all helps to ensure the software is ready for production.
The existing Early Adopter III will still be available for the time being. A special thanks to all the participants in our Early Adopter program. Your feedback and support has been outstanding and immensely useful to our development efforts.
Enjoy and please let us know if you find major issues.