In Blizzard’s Warcraft universe, the Horde and Alliance factions have always opposed each other. However for the most part, they have on more than one occasion banded together to defeat an even greater threat, such as the Burning Legion, but in the upcoming Battle for Azeroth expansion, they are about to clash again.
If this is something you’re interested in, then you’ll be pleased to learn that Blizzard has announced that the pre-launch events for the Battle for Azeroth expansion are now live, starting with the War of the Thorns: Chapter 1. This particular pre-launch event will see the banshee queen Sylvanas Windrunner head towards the tree of life with the intention of destroying it.
In the meantime the Alliance will obviously not be allowing that to happen and will be doing everything they can to defend it, and presumably players on either faction will play a role in helping achieve either goal. As you might have noted, this is just Chapter 1 which means that there are probably more events in the works leading up to the expansion’s release.
The expansion is currently set for a launch of the 14th of August and if you have yet to purchase it, you can do so now. In the meantime if you are new to the game, not to worry as you’ll only need to pay for the latest expansion as all previous expansions will be made free and all you’ll need is just a subscription to the game.