It's very interesting that they have added more resin/fibreglass, I remember around 2007 there was a rumour/talk about they had actually lightened the hull.
The tower could have a minor impact (I'm not sure how much weight is in a mini tower) but the weight from the tower is essentially over seats section of the hull, so the effect forward or back would be minimal.
I have updated my platform brackets to the Alloy fold down, so that eliminates that variable.
The vinyl overall, and padding around the gunnel's etc. is thicker, but I agree, there may be only 30lbs there.
I was just curious about the wake/weight difference in an essentially 10 year unchanged boat.