More on this here:
http://marcambinder.theatlantic.com/archives/2008/04/republicans_take_step_to_chang.php
There are still a lot of hoops this would have to jump through before it becomes binding. Another idea being floated by the RNC is to keep everything the same, but shift the cutoff date for losing half your delegates from the first week of Feb. to the first week of March. That is, right now, states lose 50% of their delegates if they vote before the first week of Feb. This could be changed to the first week of March.
I'd support this. And not even as a punitive measure, just say to the states, "You can go early, or you can have more delegates."
As we've seen this year, most states will probably move earlier, but the ones that don't, in case of a tight race, would suddenly see themselves with enormous clout.