Fun stuff for background material for WFB coming down the line:
http://natfka.blogspot.com/2014/05/faeits-tarot-gws-release-schedule-and.html
I can't imagine a release book prior to a major rules release though (I'm talking Bretonnia), but it would be just in time for our upcoiming campaign.
Anyways, it's all background fluff for whatever campaign we end up playing.