I am not a Mac developer, but this doc https://developer.apple.com/documentation/security/notarizin... claims you need 10.13 or above, which seems to run on 2009-2010 hardware. I know the latest version of Xcode 10 requires 10.14, but even that is about ~2012 hardware and newer. I think the upcoming 10.15 also has the same hardware requirements as 10.14.
Anyway, even if we say 10.14, I wouldn't call 2012 models fairly new.
Anyway, even if we say 10.14, I wouldn't call 2012 models fairly new.