Doh!
The facility in AZ is going to make ONE component of a Phone/Tablet/whatever. The headline gives the impression (I guess deliberately done to anger the Anti Apple brigade) that Apple were going to make more iDevices. Having the capacity to make more of one component of a device does not and cannot imply that they are gonig to make more devices in total.
The facility in AZ is unproven. We have no idea of its yield yet. What it 40% of what it produces is unusable? That may make the facility perfectly matched to the actual device output.
Another step in the race to the bottom that pretty well all IT Journos are engaged in these days.
Please go and sit on the naughty step and recite 1,000 times, I need to research my posts a lot better in future and not just replicate a bad article posted on 9to5mac.