When a subset of the current recommendations are adopted by a bunch of committees after at least a year of arguing about them, then a nation-full of premed advisers will start telling premeds if the premed curriculum is changing, probably in fall 2013. And prep courses will have about a year's notice before they have to release changes, and those changes will be available a minimum of a year before the test changes. So when/if any changes are finalized then there will be about 2 years notice before the test changes. And then they'll delay the changed test, betcha.
This is completely independent of what med schools are requiring of applicants. Northwestern will probably still have no requirements. UWash already changed its requirements to include a year of humanities.
But by all means, start whining and freaking out about nontrad discrimination as soon as possible.