The people who actually own a Mark 1 empeg will have first shot at the players. There are supposed to be 70 finished players in existence, and there are approximately 300 Mark 1 owners. I suspect that the first 70 will go to people at empeg, be used for demo purposes, and a few sold to Mark 1 owners.
I believe that the current estimate for the first large batch of players (approx. 1000) is now late July. This batch will finish the Mark 1 owners, should get through the deferred orders, and, if there are any left, will start to attack the queue starting at #6500-ish.
That's my current understanding of the situation. Let me know if I'm off. :)
Alex