Here's what they said about it:
After the devastating battle royale at the end of Dungeons 3, the Absolute Evil decides that its time to take a vacation, and travels to Fairyland. This despicable land is home to the Good Fairy, a disgustingly respectable and virtuous creature who has been arming heroes with invigorating potions and is generally the detestable source of all good deeds. With the help of some bewitched heroes (and more than a few exploding sheep) the Absolute Evil sets off to put an end to this story once and for all. The Once Upon a Time DLC packs in three new campaigns, three new Evil hubs, new wall tile set for the dungeon and an all new boss – the Good Fairy (and exploding sheep, don’t forget the exploding sheep).
It sounds like it's going to be pretty good, I especially like the sound of exploding sheep.
If you missed it, you can read my previous thoughts on Dungeons 3 here.
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