Gary.F, I understand your point and I apologize for the inconvenience.
I would like to tell you that the I7-4470 processor is still on production. If you want you can provide me your location and I can try to find information on which Authorized Distributors have this specific processor.
In regards to the "Updated processor support" means that the BIOS update you are using has a microcode update for the processor installed on your system. It does not change the official supported processor list or similar.