The next WoW expansion, Battle for Azeroth, was revealed at Blizzcon, and the cinematic trailer made its debut.
We make the standard observation that it is not as good as the Wrath trailer. But it's still quite good, and honestly, is a lot more understandable than the last couple of trailers. The graphics are excellent as always.
It's got some good moments for both factions. Sylvanas reminds everyone that she's the Banshee Queen and discovers Horde pride. Anduin, on the other hand, has a really cool helm, and realizes that healers win battlegrounds, thus putting him ahead of 80% of PvP players.
As for the theme of the expansion, way back in 2009 I wrote a post on The Nature of War, and I think it still holds up today. I don't think Blizzard can make this work without fully committing one side as the aggressor.
I do hope Blizzard doesn't make Jaina Proudmoore into the bad guy though, and butcher her character like they did to Fandral Staghelm. Her perspective is interesting, and I don't think it's wrong.