I was never really an AC fan. Aside from the first game, I've only played Revelations, which admittedly gave me an unfair impression of the series as a whole.
But when I see this announcement, I just have to ask myself: Why? The naval mechanics of the later games seemed quite interesting, but beyond that each of these games looks like a carbon copy of the last with new costumes, skins, and historical flavor plastered on.
And now they're going with fucking vikings of all things? Just.... Why? Did somebody ask for this? Is there some untapped niche of "sneaky ninja/assassin game, but vikings" I'm unaware of? Of all the different historical settings and concepts they could have explored, they managed to choose one that feels both wholly unfitting and "been there done that" at the same time. Baffling.