I wonder if they're referring to the new "fan-based" VMK? It's sort of a coding project going on, and yes, their staff and testers are allowed in. However, this is a project that has gone on for more than a year. While they do expect to let people in this summer, I have my doubts it will be done too soon. The person who is coding it is using Python and seems competent, so no doubt whenever it is released we will have a very similar game on our hands.
Unfortunately, Disney still owns the rights to VMK, so I'm thinking legal issues may soon arise. Here's hoping that won't be the case though.