It's apparently called the Kabalite Skysplinter. I doubt it comes with a formation, but here's to hoping. It looks like the price is going to be 55 USD, and appears to be a unit of 10 Warriors and a Raider, but it's hard to see, so I might be missing an Archon or something.
Got the info over at natfka, where you can see the photos yourself, here: http://natfka.blogspot.co.uk/2016/12/armored-assault-box-sets-gw-reveals.html
It shows all of the box sets GW is releasing this weekend. 12 factions in all.