WoW Legion Pre-Expansion Patch Notes
The Legion Pre-Expansion Patch is now ready for testing on the Public Test Realms (PTR). Participating on the Public Test Realms lets you test a patch before it has been released on live realms. If you’d like to help test and provide feedback, you can start by copying your character and downloading the PTR client. Once you’ve had a chance to try things out, visit the PTR Discussion forum to discuss the patch. To report issues or errors, use the in-game Submit Bug feature (found under Game Menu -> Help -> Submit Bug) or by visiting the PTR Bug Report forum.
If you’d like to participate in the testing process for the upcoming World of Warcraft expansion: Legion, opt-in to future beta tests from our Beta Profile page; check the box next to the games you’re interested in testing.
PTR Reminder: Content in the Public Test Realms are still in-development and details may be subject to change before release of the live game. Not all of the content listed may be available for testing or may only be available during a limited testing window. Keep an eye on the PTR forums for more information when specific tests may be taking place.
You can read the entire patch notes from the source on the warcraft home page