I don't think so. I know the number of 747-8s that Boeing thought they could sell when they were deciding to launch the program but I suspect that's proprietary so I'm not willing to share it (suffice to say it was more than they've sold to date).
For the most part the 747-8 used the same supplier base as the 747-400 and the changes to the 747-8 relative to the -400 would not have required much in the way of new or modified tooling, with the exception of the wing and the engine. Most of the wing is done in-house by Boeing, and GE was a risk sharing partner on the 747-8 program (I suspect there are some high level discussions on-going between Boeing and GE regarding the future of the 747 program - GE would certainly like to sell more GEnx-2B engines).