I wanted to see if the updated NVMe kext in 10.13 (build 17A264c) loads under Sierra. Here is the answer.

$ sudo kextutil IONVMeFamily.kext
(kernel) kxld[com.apple.iokit.IONVMeFamily]: The super class vtable ‘__ZTV18IOTimerEventSource’ for vtable ‘__ZTV21AppleNVMeRequestTimer’ is out of date. Make sure your kext has been built against the correct headers.
(kernel) kxld[com.apple.iokit.IONVMeFamily]: The super class vtable ‘__ZTV18IOTimerEventSource’ for vtable ‘__ZTV21AppleNVMeRequestTimer’ is out of date. Make sure your kext has been built against the correct headers.
(kernel) kxld[com.apple.iokit.IONVMeFamily]: The super class vtable ‘__ZTV18IOTimerEventSource’ for vtable ‘__ZTV21AppleNVMeRequestTimer’ is out of date. Make sure your kext has been built against the correct headers.
(kernel) Can’t load kext com.apple.iokit.IONVMeFamily – link failed.
(kernel) Failed to load executable for kext com.apple.iokit.IONVMeFamily.
(kernel) Kext com.apple.iokit.IONVMeFamily failed to load (0xdc008016).
(kernel) Failed to load kext com.apple.iokit.IONVMeFamily (error 0xdc008016).
Failed to load IONVMeFamily.kext – (libkern/kext) link error.
Check library declarations for your kext with kextlibs(8).