The Riverglades get their own Ring of Blood
The Riverglades get their own version of the Ring of Blood. In the Bloodmaster’s Ring, deep in ogre territory, players fight the best brawlers of the Bolder’ok clan. Blizzard showed the fighting pit in its new video about leveling past level 30.
The Riverglades is one of the new zones of World of Warcraft: Forever. Players arrive around level 36, and both the Horde and the Alliance have quest hubs there. The Bolder’ok are ogres who broke away from the Twilight’s Hammer after the Second War. The rest of the zone is in the post about the video.
What the beta files show
In the video Blizzard gives the ring a single sentence. The beta files say more, although Blizzard has not confirmed any of it. The ring has a host: Chub’chob, Bloodmaster of Bolder’ok, a level 45 elite. Whoever wins earns 
Champion of the Bloodmaster’s Ring, with the line “Earned the respect of the Bolder’ok.”
There is also a rare ring with the same name, 
Bloodmaster’s Ring, item level 45, with Stamina, Intellect and spell power. How you get it is not known yet.
The Ring of Blood in The Burning Crusade
The Ring of Blood was a quest chain in Nagrand in The Burning Crusade. The goblin Gurgthock and Wodin the Troll-Servant sent players into the pit against ever stronger opponents, until one of them was champion. The idea came back in almost every expansion after that, up to Dragonflight.
Whether Gurgthock and Wodin return in Forever is not known. In the beta files the ring belongs to Chub’chob.
Source: Wowhead