I wonder how long before the PS3 has an equivalent controller out? Would it require all new hardware, or are they set up to have something like this communicate already?
Well, Sony has their new handheld device coming out which has some control capability but really doesn't compare with the Nintendo one.
I don't think Sony would have to build a new system to have a similar controller to Nintendo but it would require a hefty code addition + additions to the SDK(software development kit), not to mention, getting developers to sign on for it as well. In all likelihood, Sony will probably gauge the market response to Nintendo's system and plan from there, most likely in a new system.