Northstar and Osprey have stated that these will be the first additions to a forthcoming fantasy game which will also include new plastic Goblins and Elves (amongst others I would surmise) but they would be suitable for any fantasy setting, Frostgrave, Song of Blades and Heroes, Open Combat etc..
Each Sprue contains enough bits to make 5 miniatures with a mixture of weapons including bows, spears and hand weapons. Also you can make a leader and standard bearer if desired. Buying a couple of sprues meant I could make 10 minis.
My only criticism at the moment is that there were no crossbow weapon additions on the sprue but I have heard that their will be extra dwarves released including these.
Top image credited to Wargames Illustrated*