WebObjects 5.3

The release notes for Xcode 2.1 state:

WebObjects 5.3 The WebObjects developer tools are now included with the Xcode Tools. For more information see here.

EOModels can now be edited within Xcode with a new EOModeler plugin that integrates CoreData modeling tools.
WebObjects Builder has UI enhancements and generates HTML 4.0.1 code.
WebObjects Runtime now supports HTML 4.0.1.
NSArray, NSDictionary and NSSet now implement the java.util.Collection interfaces.
Axis 1.1 has been integrated with the Direct To WebServices feature.
WebObjects is qualified against Oracle 10g using the 10.1.0.2 jdbc drivers.

In addition to:

NOTE: You do not need a previous version of WebObjects on your system before installing WebObjects 5.3

Whoo hoo! Doing a happy dance now!