This one appeared about a month ago as a listing on Little Brown Books, but not much was known about it. There was some speculation that it was an episode, much like Gift of Maud Pie and it's book adaptation, but that doesn't seem to be the case. This is the same artist behind Under the Sparkling Sea from way back in 2013.
Head on down below for the synopsis and details!
Rarity's entire order of rare island gemstones has been canceled because the Great Dragon Migration has brought dragons to Dazzle Island! But all hope is not lost as Fluttershy and Spike travel to the island and explain to the dragons why they need to move. When our heroes reach Dazzle Island, they discover that it'll take more than a few words to resolve Rarity's problem!
Ready your hooves as you travel with Fluttershy and Spike to confront new dangers, help a fellow pony gain her cutie mark, and learn the true power in hugs!
Hardcover: 40 pages
Head on over here to pre-order it! Expect The Dragons of Dazzle Island to ship on the 6th of September.