Unlikely. General Electric has separate IT departments for its various divisions and each of those departments has it's own CIO and as a consequence it's own set of rules and requirements. That said you have to ding them a little bit for having the corporate CIO (which all the other ones report to) be a person who has seemingly no formal IT credentials (http://www.ge.com/company/leadership/bios_exec/gary_reiner.h...)
Well, the one good thing about this is it screams a simple truth that the haters never want to address which is that proprietary software is what locks most companies into IE6. So all those people yelling about IE6 should leave the CIOs alone and spend their time going after the small businesses unwilling to rewrite their shitty html.