Disney are currently modifying their current Guest Assistance Card program, which provides access to attractions for guests with disabilities. The new program is designed to provide the special experience guests have come to expect from Disney. Disney hope it will enable them to help control abuse with the current program.
The new Disability Access Service (DAS) Card will replace the Guest Assistance Card. Guests will be able to request a Disability Access Service Card at Guest Relations, and they will receive a return time for attractions based on the current wait time.
Disney also recognize that people have different needs. Guests can visit Guest Relations to discuss their individual situation, and Disney will continue to provide assistance that is responsive to their unique circumstances.
A Fact Sheet explaining all the details of the DAS are here