About 70-80 quests are complete, this is about 2-3 times the amount of quests in the entire Path of Evil intro module (all four questpaths through that).
Four modules are complete. These include three major areas and one smaller area. Three more modules are in various stages of progress: a very short one that starts the campaign (half complete), the companion sidequests (85-90% complete), the Stronghold (player controlled stronghold mechanics complete, otherwise still working on area design).
Two more modules are needed but not started yet. One of which should go relatively quickly.
Nine modules? Well, some are quite small, only 3-4 areas. Others are 20+ areas. I have a logic to it's organization, and since it's a campaign no reason I can't have lots of modules. Also I figured smaller modules would make providing bugfixes for people quicker since I'd just have to upload smaller chunks instead of a whole campaign. The OC's Skymirror area was a module by itself iirc.
Then comes going back over everything to add flavor, companion flavor/conversation/options, and polish. Overall, the campaign is somewhere greater than 50% complete, but it is not playable to completion.
What's taking so long? Well, there's the player controlled stronghold for one. It's never been done that I've seen outside the OC. And there's eight possible companions. All of which have their own sidequests, interactions and you can ask about any quest in the game. Plus I'm a lone author, poor scripter, and slow writer. :-)
Two of the modules would be releasable as separate modules of 20 or so quests each, since they're virtually all sidequests. Players could just do random jobs without a big overarching story or having some untied up story bits (ie finding campaign items whose reason for being there is given in another module). Another section of the companion sidequests would be releasable as a 15 minute all action no story hackfest.