GW have released the first of a series of expansions to the eternal war missions via ibooks. The first is for SM players however more will follow. It contains 6 missions very much like battle missions. Whats more is they arent an optional extra, they have been added to the main missions rules. Eg if one of more players wants to use 'their armies missions supplement' instead of normal eternal war then you roll off. The winner can then choose eternal war or their supplement. If you choose the supplement then you role again to determine the mission.

The missions look good, obviously quite fluffy to the SM style if play. I think these will really take off when more armies are done (and when a hard back comes out for all the armies like a replacment to battke missions). For now its ipad only im afraid.