User blog comment:Essie Essex/Arkane Studios Announces Dishonored 2/@comment-26396097-20150807160551/@comment-4807396-20150808081248

It would also mean that both Corvo and Emily survive long after the events of Dishonored 2. The Outsider talks about "when Corvo's hair turns white and [he passes] from this world", and Corvo still has plenty of colour in his hair at 54 if that portrait is anything to go by.

If and how it changes them, though, still remains to be seen.