“As we’ve discussed before, the nature of WoW Classic sometimes invokes different memories for different players, and this leads to certain misconceptions for some about what is or isn’t working as intended,” Blizzard wrote in its official forums. While the developer did not reveal the specific numbers, there seemed to be too many bug reports for things that were actually working as intended.
Kaivax, a WoW forum community manager, revealed that WoW Classic's class design, battleground mechanics and stats on existing items will be set to their 1.12 state, despite the game releasing content that expands beyond that. This removes "progressive itemization," so if the stats on a specific piece of equipment was changed during the original updates, that won't take effect in this version.
The upcoming stress test will have some limitations. If you’re accepted for the test, you’ll see the launcher offer you a new drop down on the World of Warcraft section marked as “Beta & Stress Test: WoW Classic” which will allow you to download the client in advance of Wednesday’s test, but if you’re not already in the beta you won’t be able to log in until May 22 from 4 to 6 PM Pacific time. If you’re already in the beta, be aware that you won’t be able to log onto the beta realms either, as those will be down while the new stress test realm is up. The purpose is to get as many players as possible into those starting zones to test for stability — so there are some limitations.
The original World of Warcraft was released in 2004, and World of Warcraft Classic aims to recreate the state of the MMORPG before its first expansion, The Burning Crusade, was rolled out in January 2007. Previously, players looking for a “vanilla” version of the game were only able to experience it on custom servers such as Nostalrius, which Blizzard shut down in 2016 to protect its intellectual property.