Games Workshop (GW) has announced changes to the Cities Of Sigmar line for its game, Warhammer: Age Of Sigmar. New sculpts had previously been announced for the line, coordinated with the upcoming Battletome: Cities Of Sigmar book. The news here is that some models currently available for the Cities Of Sigmar faction being discontinued, with many of them planned to move over into the upcoming Warhammer: The Old World game.
There will still be Duardin and Aelves in the new book, although the focus will be mostly on humans. But it will be possible to construct mixed armies in various ways, based on which is your main force.
As for the models leaving the range, GW has said that you can still use them as subs for very similar models that will be in the new book.
Below is a list of images showing which models will be leaving the game.