Unreleased Den?

First off, from Friday, I was unable to get on Animal Jam, only because the lag was far too bad to play. I apologize for any inconveniences.

In today's diamond challenge post(click here for the Daily Explorer post), AJHQ might have just shown us a review of an unreleased den. 

Shown above, we find a modern version of the Crystal Palace. With many similarities to the Crystal Palace, we cannot confirm this is a different den, but we can assume so. 

The GIF which the first picture was taken from is shown above. We find a mixture of gem and diamond dens. Can you find a way to differentiate this den as the Crystal Palace or unreleased? Comment your ideas down below!