Dear Age of Empires 2 fans, i bring great news, a modding team have released an unofficial expansion of aoe2. After so many years some people have discovered how to add completely new civilizations. This mod adds five new civs, new units, techs and some other things and also new campaigns in the future.
the civs are: incas, indians of india, italians, magyars, slavs
Here's their website: http://www.forgottenempires.net/
they also have a facebook page
Heve fun!