Can you imagine? 7 months after its release WoD got its last patch in June 2016 - that's like 7.2 and ToS would be the end of Legion and the "content drought" for the next expansion already started back in April '17. But Legion is still anticipating a massive content patch, the biggest WoW has ever seen.
It's amazing to see how Blizzard turned the WoD crap show into a success story with the right pacing of content.