MS has stated that they are releasing the update in stages and some users may not see it until mid 2022. However if you want to install Windows 11 you do not have to wait. Go to this page and since you want the update version choose the first option (Windows Installation Assistant) and you will be updated to Windows 11. The second option on the page is to create a media creation tool very similar to Windows 10 tool.
Hi, I don't think I know anyone with a Windows 11-compatible machine who hasn't received the Windows 11 upgrade at this point. Yet, I'm still not be offered it on my XPS 8940. Is there a reason for this? Does it have to do with NVMe drive incompatibility or poor performance with Windows 11 (as I've read in other places)? Thanks for any insight.  
XPS 8940 - No Windows 11 Upgrade Offer Yet?