Terra Militaris, an empire-building strategy game, is announced and will be launched at the end of 2010. This will be available at the gpotato.eu browser game portal.
From the announcement, looks like this game will have a hero system. An interesting idea which is not available in all the empire-building game is the idea of trade route and the spreading of religion to increase political influence. This idea has come from Civilization IV. It is interesting to see how these ideas are implemented in an browser-based online game.