Games Workshop Warhammer Mortal Realms - first few issues at least seem like very good value; available via retail purchase from Games Workshop Stores, Independent Game Stores, and even News Agents, etc. Or Subscribe direct to get free delivery & extra freebies (hobby tools and such).
It's an Age of Sigmar version of the "Conquest" 80 part series that GW did in UK and AU some time ago; UK has had it for ~7 months now, only just launched this week in AU.
All that said, "Hachette Partworks" are the agency for the delivery program and have mixed (poor) reviews online; I have never used them myself, but if in doubt buy from your local bricks and mortar instead of rolling the dice.
p.s. first post in years, please be nice if I've stuffed the formatting or anything :)