Expansions and Supplements may or may not be valid over multiple editions, though generally they cycle similarly to the Army Books.
Earlier versions of the Warhammer Fantasy Battle Game did not have individual Army books.
All army books were initially replaced by a get-by list in Ravening Hordes, distributed for free.
In White dwarf magazines "Warhammer chronicles" there came preview army lists for Lizardmen (wd 256, April 2001), Bretonnia (wd261, September 2001), Wood elves (wd269, May 2002), and Beast of chaos (wd275, November 2002), that replaced their Ravening hordes list, and was replaced by their army books later in the 6th edition.
The preview lists can be found in Annual 2002 and Chronicles 2003 in addition to White dwarf magazines.