I know everybody is excited about this thing but I think the target release was end of summer from the beginning. As far as who does and doesn't know about the release date I can tell you (from experience in manufactureing) that it is very likely that nobody knows when it is coming out exactly. Assembling the materials to package a kit is a long supply chain and while all members of that suply chain are on a schedule it is inevitable that something will come up or need changing (not to mention the possibility of a part vendor not coming through).
I would ignore all of the promised dates. If you really want one, order it. You will know what the release date is when it gets there.
It will be worth the wait.