That none of them are doing this almost a year into the ASIC game is worrying because it suggests that they don't have adequate financial backing and are relying too heavily on pre-order funds to meet current costs rather than using the profits from pre-orders to fund production of the next batch (allowing the never-ending pre-order cycle to be broken).
I left this out as it was obvious that the preorder route is getting real old, but your right on point. Whats mind boggling is how Avalon with 1-2 people and butterfly labs with millions of dollars still hasnt delivered. Thats disturbing with Avalon they should have more than enough to produce units ready to be sold. Instead of still taking pre orders.