my quick idea is that some GM copy -pasted more than intented and the changes was for next week, but on the same time there is a separate post about hunter buffs.
2nd more logical idea is that they patched some test server they have and it broke the game. since wow is like million lines of code , also alitle bit spaggeti code as popular a youtuber said. so i guess/hope they are just working on a fix.