As it is now with every season of Arrested Development, it’s contingent on the cast’s availability.
Because of what’s going in the world, specifically Trump and Making a Murderer, Arrested Development creator Mitch Hurwitz feels it imperative to get on season 5 of the series as soon as he can as he wants the parallels that the Bluth family have with the chaos of the real world right now to stay timely. While it’s outlined, the actual scripts have yet to be written.
Hurwitz is holding off on the negotiations for the highly in demand cast. In the past year, you’ve probably seen just Jason Bateman, Jeffrey Tambor, Alia Shawkat, Michael Cera and David Cross in a multitude of different shows and movies. As soon as all the t’s are crossed and i’s dotted, he’ll try to outpace the crazy of Trump and whatever else is screwed up with our justice system leading up to the general election in November.
With that all of being said, this is probably the best indication of the odds being in favor of the next season of ‘Arrested’ actually happening.
Ironically enough, getting guest and recurring cast members for Arrested Development never seems to be a problem.