The announcement of the new novel by Christie Golden is very interesting.
"Before the Storm", release date May 2018.
What does that mean? The novel will most likely cover the 8.0 lore (and I think we'll get another one dealing with 8.1, 8.2, 8.3 one year later). Illidan has been released May 2016, Legion has been released 4 months later. This pretty much puts the 8.0 (pre patch) release around June / July with an expansion release date around September. A release in May or earlier is not going to happen at all (and never was likely tbh).
Another interesting thing is the title and the little explanation text - does "Storm" refer to a faction conflict a la MoP? I mean we already talked about this. Maybe it's the "final" clash of Jaina, Genn and Sylvanas before factions need to reunite to fight Void Lords?
I'm pretty excited at the moment. It looks like we're eventually getting MoP 2.0.