I think the 5.5 was in testing. But don't see one being released/announced on Tuesday.
I'm not an engineer but I can't imagine that the 5.5" would be that much different (harder) from the 4.7" (to manufacture). Perhaps challenges with the screen or battery, but the rest of the hardware should be nearly identical to the 4.7".
If other manufacturers have been selling large screen phone for years, I can't imagine Apple would have that much trouble getting them produced.
