Mike Myers on 'Shrek' Spinoff 'Donkey,' Writing 'Austin Powers 4' The veteran actor also confirmed to The Hollywood Reporter that a fourth 'Austin Powers' movie is in the works: "I'm writing it right now; I'm having a great time.". The veteran actor also confirmed to The Hollywood Reporter that a fourth 'Austin Powers' movie is in the works: "I'm writing it right now; I'm having a great time.".