From the post:
Hello, Crystal Clans fans! As word of the crystals and their powers spread, more clans have emerged to do battle and claim them! Plaid Hat Games is pleased to announce the coming of four new expansions for Crystal Clans! Each expansion contains a brand-new, fully playable clan to add to your collection and send against your opponents. The Shadow, Fang, Leaf and Feather Clans each contain new and unique play styles as well as units to lead that clan to victory! We will be releasing new preview articles on each clan in the future, but for now let's take a quick look at each one!