Patches, objects, monsters, and files for H3WoG.

When and where will this Wog file be available? And do you know of any similar files with new towns that can already be added to the game (if so, where can I find them)?

If even one town were already ready, there would be hundreds of links all over the internet. Currently, none have been released. The most well-known projects, besides the Cove, are the Rampart (a town in Egyptian style), the Asylum (a town with a marine theme), and the Kremlin (based on Russian mythology).
Stay tuned for updates and check the DF2 forum.