From Prospero to the Silver Tower
November's White Dwarf is a good one, with lots of hints on the horizon. Quite literally I found a collection of images that beyond having the magazine in hand, is the best previews on hand (you can pick it up by following the link below).
White Dwarf
https://www.games-workshop.com/en-US/White-Dwarf-12-month-sub-ENG
https://itunes.apple.com/us/app/white-dwarf-ultimate-warhammer/id1137054457?ls=1&mt=8
Images via Miniwars- Check them out for more
http://www.miniwars.eu/