Plenty of people have given a preeetty compelling argument towards it. Biggest one being that Sargeras was obviously not on Argus in the 7.2 trailer yet Gul'dan still opened a portal to Argus in order to bring his soul to Illidan's body. Also, the only thing you see in that portal IS Argus. Nothing else at all. I think that's a pretty good start to a theory.
Yes, 7.3 will have the final raid of this expansion - or at least, "Argus" will. Maybe they'll split Argus and release it in 7.3 and 7.4, we don't know yet. The only thing Blizzard said was that 7.3 will implement Argus and wrap up the whole Burning Legion storyline.
They need to make an intoduction and questline that leads into the next expansion, connecting the two expansions(the end of one and the beginning of the other) in order to make a continous arc.
After the defeat of Kil'Jaeden, we will probably see a far more aggressive and overwhelming presence of the void, manifesting itself a lot more frequently now that Sargeras' prime enforcers have been dealt with. Azeroth's forces will find out what the Burning Legion's true meaning in the mind of it's master is and the next penultimate villains will reveal themselves.
I would expect it to be either the wrap-up to Legion if the next expansion has a different topic, or a glipse of it as the 8.0 Pre-Expansion event, before we start to fight the Legion on their home turf.
Though I would like to have Naga and Old Gods in the next expansion.
7.1 gave us kara, and 7.3 argus, then 7.4 argus raid thats how its probably going to go down
7.1 gave us Kara and the 3 boss raid
7.1.5 gave us Nighthold
7.2 is Broken Shore
7.2.5 is Tomb Raid on Broken Shore
7.3 will be Argus
7.3.5 will be whatever they call the raid on Argus.
It should be fairly easy to predict the patch cycles now that Blizzard is sticking to the same thing this expansion. We should see TOS in July and the Argus raid next January.
--------------------------------------------------------------------------------
Essentia@Cho'gall of Inebriated Raiding.
http://us.battle.net/wow/en/characte...ssentia/simple
http://masteroverwatch.com/profile/pc/us/Tharkkun-1222
I don't know about you, but I'm kind of tired of fighting legion after doing so for two expansions already. Frankly, we don't need a third, and Blizzard could easily wrap it up in 7.3. What would Argus really be? It would be nothing different, just a busted up, fel-covered world.
They covered this in one of the Q&A's. They said that Thal'dranath (which has since been retconned to be the original name of the Broken Shore) was just going to be an island with more fel corrupted night elf ruins. They felt Legion already had enough of that, so it's been replaced by Argus.