Context, I had to look this up:

“…a reference to the repeated (and always erroneous) claims made after almost every patch that Onyxia was using her Deep Breath ability more often than before.”

https://warcraft.wiki.gg/wiki/She_Deep_Breaths_More_%2825_pl...

The order is reversed -- people claim about nerfs before the new release, and (correctly) predict the release is imminent.