Gilnean Gryphons are gryphons found on the Skyfire after  The Battle for Broken Shore. They are ready to follow their king Genn Greymane to war.
According to a conversation between Harrison McCabe and Derek Testerman at Greywatch they are much stronger than normal gryphons. They may even be strong enough to carry a 2,000 pound cannon.
This article or section includes speculation, observations or opinions possibly supported by lore or by Blizzard officials. It should not be taken as representing official lore.
It is unknown if their name means that they are gryphons from the territory of Gilneas or simply gryphons owned by the Gilnean military.