GAF is saying the PS4's GPU seems like a preview of GCN2 too.
"Well, it might be just EGCN (Enhanced GCN), but the diagram clearly shows 8 compute pipelines with 8 user-level queues, which is what GCN 2.0 is all about (less data waiting in line to be processed)."
http://www.neogaf.com/forum/showpost.php?p=48281282&postcount=96