http://videocardz.com/63413/nvidia-nvlink-2-0-to-arrive-with-volta-in-2017 
 
 
The presentation also confirmed that upcoming Tesla V100 (name is just a guess) would also be designed in SXM2 form factor (which basically confirms it has High-Bandwidth-Memory). Whether Big Volta (aka GV100) would be offered in two variants (computing and gaming-oriented), is yet unknown.
 


 
IBM is projecting its Power9 servers to be available beginning in the middle of 2017, with PCWorld reporting that the new processor lineup will include support for NVLINK 2.0 technology. Each NVLINK lane will communicate at 25Gbps, up from 20Gbps in the first iteration. With eight differential lanes, this translates to a 400Gbps (50GB/s) bi-directional link between CPUs and GPUs, or about 25 percent more performance if the information is correct.
 
http://www.fudzilla.com/news/graphics/41420-nvidia-nvlink-2-0-arrives-in-ibm-servers-next-year 
the source was IBM and PC world
 
http://www.pcworld.com/article/3110615/nvidias-nvlink-20-will-first-appear-in-power9-servers-next-year.html 
 
and power9 chips are ready next year
http://www.pcworld.com/article/3110620/servers/ibms-blazing-power9-chip-is-coming-and-heres-what-you-need-to-know.html 
 
 

The company offers details about its upcoming Power chip at the Hot Chips conference

 
 
A presentation on Nvidia's website says NVLink 2.0 will be in GPUs code-named Volta, which also will come out next year.
Each NVLink 2.0 lane in the Power9 chip will communicate at 25Gbps (bits per second), seven to 10 times the speed of PCI-Express 3.0, according to IBM. Power9 will have multiple communication lanes for NVLink 2.0, and they could provide massive throughput when combined.
 
 
so Volta next year - no refresh?
 
 
 

it appears volta will be able to handle 8k
 
it appears that the GPU can handle two video recordings of 8K simultaneous HDR.
It could be the capabilities offered are far above the need for 4K as the current trend.
also has a new video accelerator
 
source from Netherlands GTC
and confirmed from Keynote speech
 
volta is also on 16nm FF
 
Expect a very short refresh of pascal because Nvidia own roadmap puts full release of volta before 2018 
 
as i said GV100 may GTC - consumer volta cards 3-4 months later just before Xmas
 
and confirmed from  GTC europe keynote .... fall/winter right from jen's own mouth
 
 

should be pcie 4.0
but there is plenty of room in pcie3.0 yet
for something like computational and not GPU/video - more bandwidth and crosstalk amongst the gpus more important
 
so for home users no - current  will be fine - more up to date the better tho
 
NVlink will be solely HPC   i.e. server

Not even pushing PCI 3.0, if Nvidia would start caring about quality with their GPU drivers, I might look at Nvidia again, till then, who cares about faster tech....