Apple has released macOS Big Sur, featuring a brand new look for your Mac. If you upgrade your Mac to Big Sur, make sure you’re running the latest version of Vellum (2.8.1), which has been updated for this new release of macOS. You can do that using Check for Updates.
Apple also announced brand new Macs featuring the all-new M1 processor. If you’re planning to purchase one of these new models, you can look forward to a version of Vellum optimized for the M1, coming early next week.
Update 11/17/20: Vellum 2.8.2 is now available, and is optimized for the M1.