Now that the Civilization V: Gods & Kings expansion pack is out, I've now modified the templates so that you can add a new parameter, "|game=Gods and Kings", to them. I suggest putting two templates on pages where the item was changed in the expansion, as is already done at Temple (Civ5). Support? Oppose? Comments?
(You can also check out the Forum:Gods & Kings article conventions thread I created a few days back.)