Yes it is OK for you to upgrade to Windows 11. This web page has more information on the stepped rollout (which is something they also did for Windows 10). 
I have the Black Edition of the 7506 2n1. I see that the 7506 2n1 is on the list for Windows 11 testing. I also notice that you can actually upgrade to Windows 11 using the Windows Installation Assistant (although it does suggest waiting until Windows Update pushes it). So, will it be OK if I go ahead and upgrade? I notice that the 7506 2n1 Black Edition does now ship with Windows 11, so am guessing that it will be OK, but any thoughts would be welcome Thank you
7506 2n1 Black Edition - Windows 11