The website gamebastion.com is an aggregator of news from open sources. The source is indicated at the beginning and at the end of the announcement. You can send a complaint on the news if you find it unreliable.
In the most recent PTR Build for WoW Classic Season of Discovery Patch 1.15 Build 52146, Aspect of the Lion is changing from a Belt Rune to Chest Rune. This means it is replacing the previous Expose Weakness Rune that was a part of the Blizzcon Demo.