Not long after Blizzard made the phase 3 Burning Crusade Classic PTR live last week, it was taken down due to a number of server issues which resulted in constant crashing, disconnecting, and server stability issues.
The PTR is expected to go live again later this week, although there is no information released by Blizzard on how long exactly it will stay live for especially considering the holiday season is fast approaching.
Last week the Shadowlands PTR was confirmed to not receive any new updates for the remainder of 2021, so it's a surprise Blizzard will push this new build for Classic before then.
The phase 3 PTR went live with the new tier 6 raids that include the Black Temple, and Hyjal Summit, giving players the first look at the difficulty levels of these new raids which come after Blizzard recently nerfed Tempest Keep and Serpentshrine Caverns to help struggling guilds.
Burning Crusade Classic Phase 3 PTR Taken Down Due To Server Stability Issues
When phase 2 was on the PTR, it was left up for over a month of testing with no extended breaks which gave players a lot of time to test the upcoming raids, although players are not sure that will be the case this time around.
Outside of the two new raids, there is not a whole lot of content to test for the Burning Crusade Classic phase 3, so players are expecting a January release date if all goes well for the remainder of the testing period.