ign just posted an update detailing 4 collectors editions:
http://au.ign.com/articles/2013/04/2...dc794f7600000b
The one detailed above is the Dedsec Edition.
2. The vigilante edition comes with:
Aiden's cap and mask
Soundtrack
Palace pack mission
3. Uplay Edition:
Steelbook and 3 single player DLC
4. Special Edition:
Breakthrough pack
Coming out in NA on November 19 and Europe on November 22