“August 26, 2019 12:00 PM , we will remove the limitation on only creating a total of three WoW Classic characters per WoW account. Thereafter, players will be able to create up to 10 characters per Classic realm, for a total of 50 characters across all Classic realms per WoW account.”
The post continued, providing times and regions for the opening of these new realms.
“Additionally, at August 26, 2019 12:00 PM , we will open the following new realms in this region:
At this time, all realms that have a Full or High population tag are expected to experience extended queues. We urge players on realms marked Full or High to plan to play on one of these new realms to avoid the longest queues, and to help spread the player population as evenly as possible and provide the best play experience for everyone.”