Warcry
An upcoming specialist game for Age of Sigmar and successor to Skirmish, Warcry is advertised as combining aspects of Warhammer Underworlds and Kill Team, and promises a much more complex and nuanced take on the various factions of Age of Sigmar, presumably by going into detail for small-scale forces that don't have much of a presence in the wider battlefields. The (few) models we've seen look awesome.
The Game
Warbands
Iron Golems
Hailing from the Realm of Metal, these warriors are renowned for the quality of their smithing, believing themselves chosen by Archaon himself to forge arms and armor for the Slaves to Darkness. They also have both Duardin and Ogors.
Chaos Daemons
Will apparently involve more of the fauna of Chaos, including creatures like Furies and Raptoryxes.