Several celeb voices will be featured on `` The Simpsons '' Judd Apatow and several of his collaborators will appear . As it turns out , the A-list comedy writer-director-producer is collaborating with the animated series in front of the microphone as well . In addition to the regular cast members, a number of celebrities have been announced for cameo appearances in upcoming episodes.
Several celeb voices will be featured on `` The Simpsons '' Judd Apatow and several of his collaborators will appear . In addition to the regular cast members, a number of celebrities have been announced for cameo appearances in upcoming episodes.