Thanks for the replies. I did not find that system requirements section in my searching but logically that is the first place I should have looked, sorry.
On a related note, is it too much to hope that Veeam 8.0 U3 supports 2016? I have another upgrade project which is a bigger leap. If necessary, I could do the SQL upgrade after the Veeam upgrade potentially, as its currently using 2012 which I think is the in-box version so this should install without complaints.