Now now, they've only said they'll release 2 Polaris chips this year, that doesn't mean they'll release 2 GPUs, integrated included, this year.
Perhaps I'm wrong but to me, GPU always meant the chip. The same GPU can go into several graphics cards or embedded graphics solutions.
Polaris 10 and 11 are two distinct GPUs. I wrote earlier in this thread that AMD could take up to 8 distinct graphics solutions from these 2 GPUs (Pro + XT versions of each chip in both mobile and desktop).
I also didn't exclude the possibility that one of these Polaris chips isn't in that MCM solution (it could be 4 TFLOPS SP for a Polaris 11 at ~650MHz). I said if it does 4 TFLOPS DP then it's definitely not coming in 2016 because that would mean it's a chip with a much higher performance than Polaris 11. Polaris 11 is a Hawaii replacement, so even with a 2:1 ratio it should do 3 TFLOPs DP @ 1GHz if it comes with 48 CUs and they're all enabled.
Regardless, Jawed was the only one expressing certainty that those are 4TFLOPS DP because the slide is aimed at a HPC audience (I don't see HPC anywhere in that fragment of a slide though, I guess he took it from the quad-channel RAM).
What I see is 2 stacks of HBM2 so there's a good chance it's Polaris 11 + Zen in a MCM. The top-end Polaris is probably using 4 stacks to reach 1TB/s.
The 4 channels of DDR4... that would actually make sense for AM4 if AMD wants to make full use of integrated GPUs in their APUs. That way, even the lower-end models could skip the HBM and interposer and still get 100GB/s of bandwidth, which could suffice for say a Polaris 10.
I haven't seen Polaris 10 or 11 linked to the name Greenland, however.
You weren't supposed to, either. Greenland would be a part of the "Arctic Islands" family and RTG has changed their codename schemes away from the "Islands" mess and on to "Star Name + performance number".
You'll probably never hear from "Greenland" again, since it should have had its codename changed to "Polaris
something".