Desora designed the "SloRoller" accessory that comes included with the new -3 model Kamado units.
They sure do an excellent job of making it sound super high-tech but honestly its a fancy looking heat deflector/diffuser. You could accomplish near identical results using the metal deflector in the SCG or the Euro MT E-5775 kettle (If we ever get it in NA). Almost any circular deflector that forces hot air around the outside edge of the kettle or smoker is going to create a similar rolling smoke inside the cooker.
It's also made of a "high heat " plastic material thats only good up to 500 deg... so far we've only seen one melted into oblivion
As for the iKammand (Auto Temp Controller for Kamado) - Good kit that does work but they only provide you with 2 probes when the unit can accept 4... and the real kicker is that the probes havent been availble to purchase on their own for almost 2 years now. Kinda dissapointing they would release a product (+-$300!) then not offer any parts support for it.
Outside of these little issues I actually really like the Kamado brand products but personally would get a -2 model for a LOT less money and more or less have the same rig. Really the only difference up to the -3 is the addition of the SloROller deflector and the fact that the body has to be slightly taller to accomodate the large accessory.