That was the experience buff.
There are many journeys to be taken in Azeroth, and if you’re in the middle of one, or just looking forward to starting a new one, we’ve heard your plea for a little more time. Due to the popularity of the Winds of Wisdom 100% experience buff in Battle for Azeroth, we’re extending its benefit through to the release of the Shadowlands pre-patch!
The rep buff ended today.