Pretty good catch. Of course there's no way to know for certain if it's +2 con until we get the latest patch, but it does indeed seem like it. To my knowledge there aren't any other races that get a CON stat bonus either, so it's definitely plausible.
With that being said I wouldn't be surprised it it's a bonus to something else though. I was kind of expecting undeads to get a CON bonus, but I won't rule out humans just yet.
