Blizzard rolled out tons of news and content during the BlizzCon weekend that took place in Anaheim, California. The convention brought us details on Sombra from Overwatch, new content for Diablo III and the eventual journey to the Draenei's home world of Argus in World of Warcraft.
IGN managed to get word about patch 7.3 for World of Warcraft: Legion, which will open up an all new questline that will take gamers to Argus, the forsaken world of the magically imbued Draenei race, who have teamed with the Alliance and have become sworn enemies of the Orcs after their world was felled by the Horde.
Game director Ion Hazzikostas explained to IGN that even though patch 7.2 hasn't been released yet, and that he didn't want to spoil the story for the upcoming patch, he wanted to lay the groundwork for 7.2 by talking about 7.3. This will see more of how the Legion and Draenei connect and why the bad blood exist in the way that it does, saying...
[Patch 7.3] is very closely tied to Legion, and that's what it's about; it's Legion and Draenei, and it felt like that is the culmination that we're building towards, and so let's just do it, [...] Let's make it happen, and it will feel like a very natural continuation of the story when players get there.
The thing is, patch 7.3 is a long ways away. As explained in the IGN article, World of Warcraft's next big patch will be 7.1.5, so they're several builds out from 7.3. As far as time frames go for when it will release, they weren't able to squeeze anything out of Hazzikostas, who kept mum about the upcoming updates.
However, they did find out that World of Warcraft's 7.1.5 update will be released "soon", and that it will be going into the public test realm (or PTR) very soon after the wrap up of BlizzCon. So technically, the wait for 7.1.5 won't be too long since games don't stay in the PTR for very long. But even then that's likely many weeks away, which would mean that 7.2 would be even further out.
World of Warcraft patch 7.1 goes live on November 8th in North America and November 9th in Europe, and it was announced several months ago. So at this current rate we won't be seeing 7.2 until well into 2017, and 7.3 won't likely see the light of day until sometime in spring maybe, if not further out. The trip to Argus is definitely coming, and the embattled (and embittered) Draenei will finally get some time in the spotlight, but not before a couple of other patches make their way into the spotlight.
Of course, the whole tease about 7.3 was so that players would recognize that Blizzard is still dedicated dearly to World of Warcraft: Legion and they have plenty of new content in store for gamers for the latest expansion pack, which released back at the end of August.
In the meantime, you'll need to keep an eye out for patch 7.1.5 heading into the public test realm soon, which will introduce even more new features and content for the popular MMO.