Does XPS 8910 use same motherboard as XPS 8900 (NVME SSD)?

Dan-H, Thanks for finding the comparison table.  This does seem to indicate that Dell has a new mobo in the 8910, and they have fixed the M.2 slot so it is now x4 wide.

If anyone has an 8910 with an NVME SSD installed in the M.2 socket, please post a speed test so we can confirm.

I missed it before, but the chart seems to say that the XPS 8910 is using Kaby Lake CPUs (aka "Skylake refresh", 7th gen).  The 8910s for sale right now are still using Skylake (6th gen).  Anyone know if there is a transition to Kaby Lake soon?  (This might be worthy of a new topic)

Kaby Lake processors will  have LGA 2066 socket – meaning Skylake chips with LGA 1150 sockets will be incompatible.   So this is Monty Python "Something Completely Different"

I didn't know about the LGA 2066 socket, so after a quick search, I learned that new Kaby Lake-X (supposedly to release late next year) will use this socket.  Current Skylake and Kaby Lake do indeed use the same socket, LGA 1151.  Broadwell and Haswell used LGA 1150.

LGA 1151 is the mainstream socket for Skylake and KabyLake and the note on the chart above, posted originally by Chris M in the linked thread above is this will support mainstream KabyLake processors.

LGA 2011-3 is the enthusiast socket and the replacement path for it is LGA 2066.  My opinion, based on past history is dell won't put an LGA 2066 socket motherboard into an XPS class desktop.  

LGA2011 Skylake S CPUs and X109 series chipset  aren't compatible with LGA 1151.

http://goo.gl/J3hS8T

Its not in intel's interest to have backwards compatibility.