User blog comment:D. Cello/Assassinews 08/21 -- Padawan Graduations / Videos, videos and more videos/@comment-4081435-20110826105824/@comment-4043223-20110826213154

The thing is that we will get to play 5 (possibly 6) memories of Altair and in the clip we saw he is a teenager (late teens) so he has time to grow and change. His voice actor has played more then a few characters that has grown and matured throughout a series and he progressed there voices too to show that maturity. As for the face, well it is different but there are similarities (at least I see some)...