The set hasn't been officially announced yet, but Fox has made artwork available for
Wonderfalls - The Complete Viewer Collection. The rumored release date is January 18th according to
SaveWonderfalls.com; hopefully we'll hear something official soon.

Thanks to Tom Woodward at DVDAnswers for the artwork. Also of note from the folks at SaveWonderfalls is their discussion of what the content will be:
...there will be four discs in the set, with episodes 1-4 on disc one, 5-8 on disc two, 9-12 on disc three, and the finale and special features ("Greetings From Wonderfalls," "Fantastic Visual Effects," and the music video) on disc four. The "floater" episode "Barrel Bear" has been placed in the episode seven position (in between "Muffin Buffalo" and "Lovesick Ass"), so we guess that finally puts an end to the debate about where it belongs! It also appears that "Pink Flamingos" has been changed from episode four to episode two.
With help from our friends at
TVTome.com, we think that means we would see the episodes in this order on the DVDs: "Wax Lion," "Pink Flamingos," "Karma Chameleon," "Wound-Up Penguin," "Crime Dog," "Muffin Buffalo," "Barrel Bear," "Lovesick Ass," "Safety Canary," "Lying Pig," "Cocktail Bunny," "Totem Mole," and "Caged Bird." Stay tuned for Fox's official announcement, and then we'll find out for sure!