I wonder if it's a model specific for Internet sales (unlike the 6700 which must be purchased from a S&B Janome dealer), hence the lack of videos and smaller set of included items/lack of AcuFeed? Janome did that a few years ago when they released the JNH7700 as a model that could be sold over the Internet. Almost identical to the Horizon 7700 which could only be sold by S&B Horizon dealers, except the JNH version had fewer included items.
That is exactly what it is. But for my use, a machine at 2/3 of the street price of the 6700 is awesome. It's my FMQ and free motion embroidery machine, so I don't feel that I'm running my Pfaff 7550 to its motherboard's last leg.