If it is found that it is a hardware problem that cannot be fixed with firmware/software, I expect Apple to initiate an exchange program for newer phones that have a hardware fix (i've experienced this with faulty Sony Batteries in my G4 PowerBook and the recall was well implemented and fairly painless)...now, this could take a while, but I do expect Apple to make good...
Unlike many here, (and call me a fanboy if you like

), at the end of the day when all the information is available to them, I trust Apple to do what is right. I've been an Apple product for many many years and have had issues with soem of the products and they have ALWAYS done right by me in the end (not that I haven't had my arguments with them, but again, in the end, they have doen the right thing)...until I see them NOT do the right thing given enough time and information, I'll continue to trust them and stay a loyal customer...(I am however, prepared to walk on Apple if they stupidly choose to ignore this problem is it is in fact as wide spread as many here insist).