I just received an email from CoinTerra

"TerraMiner IV will ship in December this year and retails for $15,750. "

"TerraMiner IV is currently the most powerful, high-performance Bitcoin mining rig available for pre-order and packs a hashrate of greater than 2 TH/s."

It doesn't mention how many watts.

I hate pre orders.  What kind of track record do they have on delivering new products on time?  What will be the difficulty in December?