The previously datamined Dark Ranger General transmog set has now been attached to items in Patch 10.2.5. This means that the entire set is likely available for players once they figure out how to unlock it in game!
While we don't know the exact method of acquisition, a similar Lo'Gosh weapon set was flagged as the Trading Post in today's build.
Dark Ranger General Transmog Set
Ensemble: Dark Ranger General's Kit was added in the latest Patch 10.2.5 PTR build.
This seems to include the following items: