So I went to my Extras+Info and saw I had Demin. I didn't know I had it and AFAIK, I only remember getting Cyan. The Nokia website as well states that L920s only have Cyan.
How the f**k did I get Denim?
View attachment 93847
It's a well known bug in extras+info settings.
I don't know how often I tried to explain it. That's not a bug. It's intentional. Denim for devices other than 830, 930, Icon and 1520 does not contain an update for the firmware. It's just the name for the offical WP 8.1.1 OS update. So people how were on PfD before don't get anything new with Denim. It's just a name change for consistency across all Lumias. So that's why it shows Denim/Cyan when you turn off/on the Preview for Developers.