Now the USGA will have to study this whole phenomena, and of course place the proper limits on drivers so that they do not exceed a decibel rating that damages hearing. They have so much on their plate, well with groove studies, loft limitations and the like, this could take years and years.
Probably your existing 460cc driver will have to be deemed illegal and all future drivers to be made of styrofoam or something a bit quieter. But it will be Ok to use your existing titanium driver until 2025, unless you are Tiger Woods or other pro, in which case by 2015 you need to switch to a quieter driver.