The Fourth Age: Total War - The Dominion of Men has been released as an installer on Moddb January 1st 2016. This represents the final and full iteration of the mod (though enhancement patches may be later released) since its inception in late 2004.
Steam Installation Instructions:
IF YOU ARE USING STEAM DO NOT USE THE DESKTOP SHORTCUT!
Installation instructions, an alternative RAR version, and support can also all be found at Twcenter.net
There is also a website available at Thefourthage.wikidot.com
Enjoy the mod here!