Leo Buttiker has posted a release announcement about the new framework they've developed - Trevi.

There're already thousands of web frameworks out there so I would sink into the ground if we really wrote another one. [...] Zend Framework looked like a nice solution. But what we probably liked most is that ZF allowed us to replace every component in the framework.

To this end, their "framework" isn't truly a new way of doing things - it's just a heavily modified version of the Zend Framework they've customized to fit their needs. Trevi is their own internal name for this release.