And they could also take hippos from Heroes of Might and Magic III and... I repeat: what can you get from them?
Although the information about female units fits perfectly with the Sylvan faction. The fairies will remain, and the archers will be turned into female archers (besides, there have already been a lot of games with female elf archers, and Black Hole is always trying to copy something). And they really could fool the fans. The goal is simple: now we will say that there won't be any, and then we will make them, and everyone will be surprised :)