It appears that the rumored 30k plastic may be breaking. There are leaks of these models on sprues now floating around. Just wow, I am hoping that we start to see more.... Open the floodgates!!!!!
Here are the leaked Images
Here is what I was told about the origins of these sprues
So these are from a relatively reliable source.
1) MK IV chosen because it is cheaper, less plastic
2) Expect more
3) It could be a test run but unlikely.