Samsung has made the Galaxy S21 Ultra official, alongside its smaller S21 and S21+ siblings. Its heretofore well-leaked specs is housed in a fresh case design with a metallic rear camera housing and an otherwise matte finish. The OEM also confirms its newly-acquired S Pen compatibility, new 108MP main shooter and Knox Vault security features.
https://www.notebookcheck.net/The-Galaxy-S21-Ultra-is-Samsung-s-latest-truly-premium-device-with-a-price-to-match.515127.0.html
everything seems to look great with the exception of the uncomfortable high location of the volume knob
I take it the case doesn't have a headphone jack, but it definitely could've, since it has to house that pen anyway it has room on the other side and audio wiring is very simple. There are such cases for iPhones but if Samsung doesn't make it themselves nobody will make it for them.