With The Spirit having pretty much killed his movie career, Frank Miller is doing the only sensible thing he can: Working on sequels to 300 and Sin City as fast as he can.
Digital Spy reports that the occasional auteur is "polishing" the script for a sequel to Zack Snyder's adaptation of his sword and sandals epic, while Sin City 2 is a much more immediate concern:
The word I have heard is that we are going to get into production in April and I can't wait.
While Robert Rodriguez will be returning to co-direct Sin City 2 (based on the A Dame To Kill For series), it's still uncertain whether or not Snyder would be returning for a second 300 project; he may still be tied up in court for Watchmen, after all.
Miller talks 'Sin City', '300' sequels [Digital Spy]