Early registration opens today at noon EST and more details can be found on runDisney.com.
Disney Annual Passholders
If you hold a Disney Annual Pass, you already have your ticket to early registration. Simply visit your park's AP website (Here for Disney World, Here For Disneyland), log in and you'll find a link to the early registration page.
Disney Vacation Club Members
Members of the Disney Vacation Club also have access to early registration. Simply sign in to the Disney Vacation Club member site and you'll be granted access to the registration link. Just as with above, rumors are going around that proof of DVC membership will be required at packet pickup. If you're not a member and register with the link, you are taking a chance.
Disney Visa Cardholders
Unfortunately, Disney Visa cardholders are no longer given the option to register early and it appears that the discount code for registration has also been eliminated. Sorry Disney Visa holders.