Linux uses 259 as the MAJOR device number for the new NVMe drive.
It does that for the "Samsung SSD 960 EVO 250GB" in my desktop (also md0p1, for some reason):
$ ls -l /dev | grep '^[bc]' | sort -nk5,5
...
brw-rw---- 1 root disk 253, 2 Oct 17 19:02 dm-2
brw-rw---- 1 root disk 259, 0 Oct 17 19:02 nvme0n1
brw-rw---- 1 root disk 259, 1 Oct 17 19:02 nvme0n1p1
brw-rw---- 1 root disk 259, 2 Oct 17 19:02 md0p1
The major thing that I'm concerned about with Linux on a laptop is: does it resume from sleep reliably? That's where Linux has historically fallen short. I'm using Mint 18.3 w/Cinnamon, incidentally.