https://wccftech.com/world-of-warcraft-classic-patches-queues/

Blizzard has rolled out various World of Warcraft Classic patches that increase the maximum realm capacity on all realms.

As covered over the past few weeks, Blizzard’s vanilla server option for World of Warcraft has been plagued by severe queues on the most popular realms. Blizzard already warned players for extreme waiting times and urged players to move to lower-populated servers to prevent the hours-long queues. Upon launch, new realms were opened in all regions and Blizzard has now increased the maximum realm capacity on all realms to battle the queues.