The first game focused on the Old World, the second on the New World, and the third will be presumably in the Dark Lands. Known to tg as 'Total Warhammer', 'Total Waaagh!!' or some other similar derivative. The games themselves are being developed parallel to the historical games that Creative Assembly is best known for.
A trilogy of RTS games being worked on by the developer Creative Assembly, best known for the Total War franchise - which consists of pre-industrial age era Real Time Tactics battles with a somewhat simplified 4X/Grand Strategy overworld.