FUD Zilla heard whispers that AMD is working on Greenland, but other than that this GPU will use High Bandwidth Memory (HBM) the site has little details. It's expected to be launched in 2016 and will be part of AMD's next-generation K12 APU but it's unknown if Greenland will launch as a desktop card too. The site speculates Greenland may be a scalable shrink of the upcoming Fiji generation architecture.
Like we said, we doubt that Fiji will actually launch on the Pacific island of Fiji and that the Greenland launch event will be held on Greenland (Denmark), but we can confirm that the Greenland GPU will use HBM memory. There is still no confirmation on the manufacturing process, but we would expect that Greenland ends in either 14nm GlobalFoundries process or TSMC's 16nm process. Greenland will be a part of AMD's next generation K12 APU, which means that this multiple Zen core APU will get some great graphics performance. It is not clear if Greenland is a part of the Caribbean Islands (Fiji) generation or if it belongs to a successor generation.