At the end of the day, it's still going to be a First Person Shooter - most likely like any other. What are we really expecting it to bring to the table that hasn't been done already?
Not that it'll be necessarily bad because of that, but the sheer hype behind this thing doesn't necessarily mean that it'll be good. People are just hoping it will be. The trailer was attractive enough but I'll wait till I can play it before making a decision.