So i havent seen a Thread about this yet:
So this eye has been seen around and posted on the GW2 FB page, now many people think this hints towards a cinematic (or possibly live action) trailer, even though Anet said they didnt want to make CGI cinematics because they get out dated and wanted to stick with their painting cinematics, so this points more towards it being live action.
What do you think it could be?
If it is a live action cinematic i think it may be a norn in the picture or some form of frostbrood (but the texture on it looks more like dried war-paint)