Yes, he looks a little overweight. You can see it in his face and he'll need to put in a little extra work to get back into game shape.
I don't see why it's so difficult to admit the guy could have gained a little weight in the offseason and needs to work it off. It happens to a lot of guys and he just had a kid.
Usually about this time every year we hear about the things Romo has been trying to add to his game during the offseason, whether it's delivery, calm feet, etc but I wouldn't be surprised if that isn't the case this year, anyone who's ever had a child should know why.