Toy Fair News:  WizKids announced Quarriors! Light vs. Dark, for release this summer, at Toy Fair.  The new release will be playable both as a base set and as an expansion to the Quarriors! set.  As a base set, it’s designed as an entry-level game and will have a lower price point than the base Quarriors! set.
Quest of the Qladiator, the most recent expansion, was released last fall(see "New 'Quarriors' Expansion").