stevo -
Jamal addressed the "Solution" at the Rally in Newport during the owners' Q&A session. Ford has done tons of research and has identified the bolt itself as being the problem. And announced an R&R program for this fall. Maybe in October.
During the build of the GT's there were dual axle bolt suppliers. Some of the bolts, from one of the vendors, were found not to be manufactured to the requested Ford GT specification. The product from both manufacturers were mixed together when placed in the inventory system and randomly installed in the GT's. Thus the randomness of failures of the axle bolts in our cars.
Jamal said that we would all received a letter from Ford, this fall, with the requisite information on arranging for replacement at your local Ford dealer. As the majority of the GT's reside in "the lower 48", you folks around the world on either side of the big ponds, will probably be provided for in a slightly different manor. I imagine that Roush England would be the one to ask about it, in your case.
Hope this helps you out, and that my recollection and summarization of Jamal's commentary is "spot on".
Regards from Seattle
Jeff