The UbiWorkshop now offers preorders of the PC edition of the Assassin's Creed III UbiWorkshop Edition, though they note that a shipping date on this is TBD (thanks Computer and Video Games). Here's word on what this will offer:

Knowledge is power. Content is king. You have enough gadgets on your shelf already. These 3 wise sayings guided our hands while we conceived Assassin’s Creed III Ubiworkshop Edition.

LEARN
Assassin’s Creed Encyclopedia Second Edition: The updated version of the now cult AC Encyclopedia

DISCOVER
Assassin’s Creed Subject 4: The ultimate Assassin’s Creed graphic novel, containing the whole Daniel Cross/Nikolaï Orelov narrative arc obtained by merging Assassin’s Creed The Fall and its sequel Assassin’s Creed The Chain.

EXPERIENCE
Assassin’s Creed III: This years’ most anticipated game.