At the San Diego Comic-Con last month, Robert Rodriguez said that Frank Miller has written the script for Sin City 2 and that "it could shoot as early as later this year."
Talking to We Got This Covered, Rodriguez added that the sequel has financing in place as well:
"Sin City 2 is going good, we're just finishing the script for that, we already got the money. We have everything we need so we can just start shooting as soon as we get the pages. And it's the same thing for Machete 2. We've already got the budget, just waiting for the script. As soon as we're finished writing we get to start the shoot."
It is unclear which actors might return for the next film, though the previously-rumored "A Dame to Kill For" storyline again features Marv (Mickey Rourke) and Nancy (Jessica Alba).