We first told you about the Sea Islands (CI) line back in October saying that it was a mild warming over of the current Southern Islands (SI)/HD7xxx line. Any delays to it are not because of technical problems, but marketing. That said, the cards are done, fully baked and stable. If you look at the BIOS dates in the picture below, you can see that they have been ready for quite a while. No technical problems.
Also verständlicher gehts wirklich nicht.
http://semiaccurate.com/2013/01/16/amd-hd8950-spotted-in-the-wild-and-pictured/#.UPbhT2e1KUm
...zudem gibts teure Bilder.