https://wccftech.com/new-world-of-warcraft-classic-realms-being-opened-on-august-26-limitation-of-3-classic-characters-per-account-being-removed/

Blizzard will be opening new World of Warcraft Classic realms next week on August 26 to spread player population.

As covered earlier, Blizzard is estimating hours-long queues on the most popular Classic realms once the game releases next week and to help prevent extreme waiting times for players, Blizzard is opening additional PvP and Normal realms in both the US and EU region.