Wow, that's unfortunate. For us, anyway - because THREE QUARTERS of our NAS suppliers do not support SMB V3!!
SEAGATE SMB V3.1.1
SHUTTLE SMB V1.5
QNAP SMB V2.1
NETGEAR SMB V1.5
A lot of these NAS hardware providers do not feel compelled to upgrade their firmware for us.
I only stumbled on to this on the weekend, when I had to restore a backup ( just after naively doing the Veeam upgrade on all of our workstations )
It would be helpful if you would put a big red WARNING next to that "upgrade" link
Pretty sad when hardware EOL is less than five years...