The general product roadmap really should not be used as a literal interpretation for actual date of launch.
While the general product roadmap may seem to infer 2018, the specific presentations had it down as 2017, in fact I have a very early 2015 Nvidia HPC presentation that showed Pascal as 2016 and Volta as 2017 along with later presentations.
In same way in those presentations show the IBM/Nvidia Summit (mostly completed by 2017) is to be replaced in 2022 looking for ~20MW supercomputer.
If using Pascal as the 1st iteration of the strategy:
January 2016 announce Tegra Drive PX2
April 2016 announce Pascal and P100
June 2016 GP104 starts to become more available
August 2016 GP102 Titan starts to become available
Mid-late Q3 2016 DGX-1 available accessible to more businesses (we were offered this option with delivery being 1 week).
Late Q3 2016 GP102 Tesla/Quadro starts to become available
Late Q3 Drive PX2 goes into sampling with manufacturers
Early-mid Q4 2016 P100 available in certified solutions own nodes same config as DGX-1 (we were offered this option as well with delivery 2-3 days).
early-mid Q1 2017 GP100 launched as a Quadro product
These dates are pretty important because:
January 2017 announce Tegra Xavier to replace PX2
~May 2017 more indicators that V100 will be announced (GTC this year a month later than laster year that was April)
~Q3 2017 Nvidia has stated this is when Tegra Xavier is going into sampling with manufacturers - same period as the Drive PX2.
~End 2017 Summit supercomputer is meant to be mostly complete, going live is somepoint 2018 but has to take into consideration thorough testing/training users and importantly system admins/coding changes-porting/optimisation/etc.
~Q1 2018 hands-on workshops with it to start training users.
I think one of the other supercomputer projects associated with Summit is meant to be complete by Q1 2018, the 3rd associated project not sure.
This is important as Summit requires over 20,000 V100 dGPU (6xper node and 3,500 nodes but number may had increased as scope criteria may had been upped), and the two other supercomputers have another 20,000 V100 between them.
So that is a heck of a lot of GV100 accelerators just for 3 supercomputer contracts let alone additional orders, consider that the GP104 was meant to have launched according to some with ~30,000 GTX1080.
The only unknown is whether Nvidia will launch a consumer card like 2016 with the GTX1080, I tend to think they will launch very late Q4 2017 a GV104 consumer product.
It is not in their interest to have the gap too large between the 1st Tesla card on a new architecture and the consumer card otherwise it is a headache for the next architecture product cycle, possibly one reason Nvidia accelerated the launch of certain cards such as Pascal Titan.
Anyway everything seen so far ties up with the various presentations from Nvidia and IBM and one of those projects, and so far it looks like Pascal was a risk milestone/stepping stone specifically for Volta, hence why they did the unusual product launch cycle with Pascal but also paid off by providing high revenue.
But this is something I have said regarding the strategy/timeframe for some time now.
Cheers