The World of Warcraft Classic forum has been updated with a brief note to let players know that next week's Global Stress Test has been pushed back to an indeterminate date. However, the team also assured players that Classic is still on track for an August 27th release date, though devs need more time to prepare its "final pre-launch worldwide test".
The brief notice states that devs "reached the conclusion that we're not quite ready to do our Global Stress Test (previously scheduled for next week).
While we don't yet know when the stress test will be rescheduled for, WoW Classic devs are promising to have "a more definite date Soon™".
Check out the community reaction by visiting the World of Warcraft Classic forum.