The World of Warcraft team has confirmed something that many players were concerned about. The upcoming 7.2.5 patch will feature class-specific rings that alter with spec and that are considered to be "best in slot" (BiS) for several classes / specs. Many had hoped that the ring would be awarded at the culmination of the class order hall quest line but the team has confirmed that rings will be found through random drops similar to any legendary in the game currently.
The new legendaries added in Patch 7.2.5 will be new drops, available through the existing system. https://t.co/RNpNRPmlUE
— WarcraftDevs (@WarcraftDevs) May 30, 2017
On the PTR, players have looted rings that are not suited to their chosen loot settings based on class / spec. For instance, a Demon Hunter on the WoW forum wrote that he had looted a Druid legendary ring. We can assume that stats will also be randomized, doubling the "chance" of getting the right ring for the class being played along with the right secondary stats.
Additionally, players had speculated that either a third legendary gear slot would open up or that rings would not count as one of the two allowable. Devs have now confirmed that the rings will only fit into one of the two available slots.
You can check out some of the feedback by visiting the World of Warcraft community forum.