I'm not sure what you read - I didn't look that hard, but I didn't see anything at MousePlanet about a Dumbo FP. However, early reporting on the new Dumbo that will be constructed as part of the Fantasyland Expansion is that it will include a new "queueless" ride queueing system. Instead of standing in line, waiting riders would be able to freely roam a designated area which would have some kind of activities with which they could amuse themselves, such as games or a playground or something. Riders would be issued something like a FP, except that instead of a time window it would contain a group number. There would be some way to announce the current group number, and when your turn comes up you go and board the ride.