I saw a very recent article proclaiming the test runs had begun. The timeline they were shooting at then was sometime in 2007 they'd be able to ramp up full production runs and get about 75,000 units a month. Even at that volume, it's still pretty niche compared to LCD.
And just a thought: Even if "production costs" are "cheap", Cannon has been working on this technology for 20 years and has invested billions into it. These costs need to be recouped too. It's gonna have the best picture, but the price is gonna reflect that (Regardless of actual cost to manufacture).
P.S. All these sexy new tech all seem like a carrot on a stick. I wonder where LCD with LED backlights will be in 2 years. I think it's close/all ready in production (For EXPENSIVE medical displays) and seems like a darkhorse contender. LEDs replacing the fluorescent light radically improves color fidelity and I assume black levels (Since the fluorescent light isn't bombarding the image).