There is quite a discussion about this on the Ridgeline Owners Club site. It looks to be centered around the parsing of the language in the owners manual - some interpret it to be a "cya" by Honda as an improperly configured wdh could easily overload the the front axle rating, which looks to be about 3100lbs. Perhaps a sway-control only device - several manufacturers make friction devices that can be used both with and with-out a wdh. It looked to me like a number of the Ridgeline owners were using a wdh w/sway control.
I use an Andersen no-sway hitch. I could see how it could be used in this situation to take advantage of the built-in sway control but not really utilize the weight-distributing portion - just tighten the chains up enough to ensure the ball always turns with the trailer but not so tight as to engage weight distribution.
The sway command device is a new feature for 2016 and I do recall a thread on here about that:
It sounds like they are waiting for the controller assembly for yours.