This interests me more though: AMD's AM4 Platform Details Leaked: µOPGA Based Socket with 1331 Pins, 140W Max TDP [Updated]
In fact, we have seen patents being filed of multiple new sockets from AMD including a switchable, LGA design (which could also be for a new server class platform):
US Patent number “US20140043768 A1”, filed in 2012 and published in 2014, describes a brand new socket (which is switchable from PGA to LGA) from AMD:
The present invention provides embodiments of a package retention frame. One embodiment of the package retention frame is configured for deployment adjacent a top surface of an integrated circuit package. A grid of contacts is on a bottom surface of the integrated circuit package. The package retention frame when deployed substantially maintains alignment of the grid of contacts with a grid of pins in a socket. An outer boundary of the package retention frame is substantially encompassed by an outer boundary of the socket.
Makes you wonder why AMD is reinventing the wheel instead of switching to purely LGA?
When we met with AMD for the Zen processor launch last week at IDF, we were shown the AMD Naples server board and it had four PCIe slots on it. We also noticed that besides the boards main ATX power connector there were four 8-pin power connectors and two 6-pin power connectors. It looks like two of the 8-pin power connectors and both of the 6-pin power connectors were for the graphics. So, it looks like those PCIe power connectors will just plug into the motherboard instead of the discrete graphics cards.
Which means no more slot vs dedicated faff, and much better cable management.
The question then becomes why are there PCIe 8 and 6 pin connectors on the Naples motherboard? It would make sense, from a backwards compatibility standpoint, for there to still be external graphics connectors, since all brand new cards are still PCIe 3.0. Only other thing I can think of is that the PCIe auxiliary power would be run through the PCB itself through dedicated lines, the power connectors then placed near the PCIe slots themselves, allowing short PCIe M-M connectors, which would allow for excellent cable management and airflow since the cables are kept on the perimeter. Or perhaps PCIe 4.0 graphics cards will have male plugs on the rear to connect to the female plugs on the motherboard...