Today I found out, via r/csmapmakers, that Valve also added a de_nuke_zoo.vmf to the update.
It is amazing! It follows in the footsteps of the prop libraries A Boojum Snark made for TF2
So if you want to get an eye for the new content, and see what has been made available, go take a look!
You can find the vmf in your common\Counter-Strike Global Offensive\sdk_content\maps directory.