I managed to get hold of the hardback of Battletome Disciples of Tzeentch, after it went out of print. I found a eBay listing for "Disciplines of Tzeentch" that no-one else was bidding on! This obviously inspired me to get back to work on The Unbound warband.
So I painted 4 Pink Horrors to finish off the unit:
... and 7 more Tzeentch familiars:
I also started painting an Exalted Flamer and 2 Screamers (from the Burning Chariot kit) - photos of them to follow at some point, when they are done.