I heard FM2+ had about a 100w socket limit, so it's not the unified socket folks have been conjecturing about.
I'd reckon AMD is keeping PD around to try and turn it into a more profitable product by adding value through better performing games through software optimizations.
AMD must feel that FX 8350 will stay competitive in the next gen console ports we're about to get and they must be thinking that it's not worth the money to bring in an SR AM3+ chip when they can just keep selling FX 8350 and going "look at how much better it is now when it's not playing Skyrim, Starcraft 2, and Shogun 2"
All AMD needs to do to sell a bunch of FX 8350 chips is to have it place between 4670k and 4770k and maintain a sub $200 price and then load reviews with benchmarks of games that work well on AMD hardware.
It shouldn't be that difficult to do considering AMD is getting so buddy buddy with game developers now. My guess is that AMD is just gonna put the HEDT on hold until 22nm shows up in 2015.
I read that and the last little bit had an interesting tidbit,
However, GlobalFoundries will continue to extensively utilize SOI on the 32nm node, as well as on the upcoming 22nm and 14nm nodes, when an even more advanced generation of SOI will make its debut. SOI is more tied to AMD and the newly engaged SOI customers, while the 28nm and 20nm customers all utilize bulk silicon.
There is no way AMD is doing well selling a fully enabled chip that's 315mm^2 for less than $200 and it more than likely wouldn't be cost effective to release an FX 8450 or FX 8550 for $200 if it was still a 315mm^2 chip.
Another reference to 22nm SOI.
Is it just me or did I have no idea there was a 22nm SOI node coming out of GloFo?
Apparently this is a really optimistic number because not every part of the chip scales with die shrink, but
22^2 / 32^2 * 315 = 148mm^2 for a 4m/8c part best case scenario.
Selling that for $200 would be much, much more feasible.