As spotted by Hunter Hillegas on the webobjects-dev list, Apple released WebObjects 5.3.1 as part of Xcode 2.2 today.

One particular part of the release tech note (found here) is of interest: "Adds a modified Developer tools license that allows WebObjects applications developed with Xcode 2.2 to be deployed on any platform"

That alone will make a lot of people happy.