Just to clarify, when you say "release" do you mean the release of the custom servers? Or the release of the game?
New signature material
Yes, but it didn't serve much purpose in native so nobody paid attention to it. In PW it was a basic need.
Even more disappointing if outlaws steal it when it is indeed full of gold bars
But what if one of them is not on the list?
Anyone who has played the Persistent World mod is very familiar with this cart. The model is exactly the same. My guess is this is an easter egg or a reference to the widely popular mod.