Yes I have. I have file watching, dbus integration and timer working. n900 specific part supports headphones connector monitoring, shutter, keyboard monitoring, proximity sensor polling. You can listen to any dbus messages and send dbus signals.

Right now I need alarmd integration, liblocation integration and some cleanups (some resources are not cleared in destructors yet). And only half of documentation is written and only in russian.

So still have plenty to implement. For me it would be good to release it next week, but I'm not sure, that I would be able to.