Some people think that because Apple no longer supports Windows as a development platform that WO is "dead".
The reality is that WebObjects is supported about as well as any non-Microsoft web application development system is supported on Windows. Look at Hibernate/Struts/whatever. There's no "support" for these systems, merely an "active user community".
So what we think of as "support" for Windows really means that "the community deals with it". I don't blame Apple for stopping official support.
In this case, this means using Eclipse and WOLips to develop under Windows. Given that many WO users use Eclipse anyways, its not much of a stretch really.