The current development version of MOPS (Codename Oceanborn) should be uploaded as a preview in the next week on http://mopsportal.sourceforge.net/.
I've just released the latest development snapshot of MOPS.
It contains the final architecture, the heart of MOPS, which is MVC-like.
The core/controller sets the viewmode (HTML, Semantic XML, WML, ...) and the module just decides if it wants the default or the failed view.
To learn more, check out the code.