Disney announced some updates for Dumbo and Main Street U.S.A. Vehicles. Dumbo will get a new queue space, while Main Street U.S.A. will update the railing and possibly get a brick treatment in the street itself. Due to the small changes done, I wonder why the park decided to make a big announcement out of it on the blog. Maybe they predicted that people could freak out with the Main Street vehicles being taken off so they decided to do some damage control.
Source: Disney Parks Blog