I remember when I heard about GE starting construction/testing of this unit. I think it was about 4-5 years ago. There was a small article in Power Magazine on it, and a bigger one about the results a month or two ago. It looks promising.
GE just released their test results from lab testing. It will take at least 10 years to see this commercialized. The manufacturing engineers will have to get a production line and procedures set up, and worst of all, they will have to go through reams of environmental crap first to get approval from our civil masters servants to put in commercial service. Can you imagine a globull warming indoctrinated EPA staffer demanding a CO2 containment building built to nuclear standards to prevent leakage of that "poison" to our pristine atmosphere?