At the Legion Cafe event at Gamescom today, Blizzard confirmed that World of Warcraft: Legion’s first patch (7.1) will include an epic five-player dungeon (“almost a raid”) version of Karazhan.
The devs also addressed their plan for a consistent content stream rather than leaping from slow expansion to the next.
https://www.youtube.com/watch?v=mK5RfvBIclY
Source: Slootbag’s Twitch via WoWHead