Switched back to Feral for funsies for a flex run and I was greeted by this giant graphic blocking all my timers above and below my character. I eventually figured out it was a predatory swiftness graphic. Is this a new Blizzard thing? It could be one of my new addons but it really looks like a Blizzard graphic because it remind me of the T&C graphic.
The only way to turn it off is to turn off the in game auras. So you won't be able to see omen procs anymore but it gets rid of PS being shoved in your face.