So not one but two new D&D 5E manuals coming from WotC: Storm King's Thunder, a new adventure book in September and Volos' Guide to Monsters, a sort of 1/2 monster manual, 1/2 ecology guide coming in November. I'm really pleased about the latter announcement....but here's the covers:
Interesting seeing Volo used like this, but it will make a distinct new "Monster tome" name for 5E, I guess. It sounds from the descriptions like there will be a lot of Realmsian content, but still sufficiently general for use in any game, I hope. As usual, thanks to Morrus at EnWorld for bringing the scoop!