Pantheon: Rise of the Fallen published an official trailer for its Black Rose Keep content update on August 25. The accompanying text says only that the video previews the update and gives its release date as August 27.
black-rose-keep · trailer · pantheon-rise-of-the-fallen · mmo
Pantheon trailer dates Black Rose Keep update for August 27
The August 25 post accompanying the trailer gives the Black Rose Keep content update a release date and no further detail.