https://wccftech.com/world-of-warcraft-classic-pre-launch/

Blizzard has announced that it has launched the final World of Warcraft Classic Pre Launch test ahead of Classic’s release later this month.

We reported on Classic’s final pre-launch test last week alongside the game’s PC requirements. This final test has now kicked off and is available to all World of Warcraft players with a current subscription or active game time in all regions. The maximum character level is level 15.