It's difficult for people not to wonder about the things that the 2.4 patch can bring when it comes to World of Warcraft. As a matter of fact, Zertha from the Korgath realm posted what she had in mind in the forums.

Zertha claimed that the Sunwell won't be visited by the players because of the quality of loot that can be acquired from it. Players would rather stay in Shattrath and queue in front of the goblins for an hour a week because it provided relatively good items. These items are at par with the random loot drops in Black Temple and Sunwell.

Another claim that Zertha made was that Blizzard has made an announcement that the start of season four will begin with the release of the 2.4 patch.

In response to the claims made by Zertha, Bornakk gave a very stern reply. He said:

We have made no announcement regarding season 4.

There is more going into patch 2.4 than just the 25 person dungeon and I hope you get a chance to check it all out whenever it is available for testing.