User blog comment:D. Cello/Assassinews 09/23 -- Videos and cinematics/@comment-4360293-20110926191200/@comment-182.63.10.143-20110927010824

The fact is inevitable that the single player will last at most 10(most likely)to 14(most unlikely)years. Coz it is 'implied' in Embers that Ezio will die on the following year.