Nope. The first aos novel was gates of Azyr, featuring the return of the stormcast eternals to the ruined new world after hiding in Azyr for ages. I think its quite a problem that they glossed over that there had been a lenghty civilization, ruled over the godkings of the 8 realms, but sundered by chaos and driven into hiding as chaos rose ascendant and ruined nearly everything. Which is a big part of why I do not like AoS, so much potential wasted. And the novels ive read before I gave up on the series, came off as endless numbers of fictionalized battle reports, like a slight story tacked onto an army battle like youd see in White dwarf of yore.
Only Guy haley managed to inject some character into the setting, but even C.L Werner whom i had much hope for, delivered a disappointing effort. I admit I was really tempted to check out the Nagash realmgate wars book, but ive managed to hold off, I feel id just set myself up for even more disappointment.