Remember these are just rumours at the moment so add some salt!
via Steve the Warboss 11-24-2014
9th Edition Warhammer Fantasy Battles:
-One Profile for Mounted Units (like End Times units).
-End Times was full designed for the new Edition, the Books will be 100% compatible.
-No new Armybook releases until the New Edition is released.
-Empire in the starter set, the opposing army is undetermined