Dr. Horrible’s Sing-Along Blog will be a series of 10-minute webisodes. Neil Patrick Harris, Nathan Fillion and Felicia Day will star. Joss Whedon wrote the webisodes during the writers’ strike. No word on when we’ll actually get to sing along with Dr.Horrible, but Joss has already started shooting on the show as well as Dollhouse with a May start date, and he has many comic book scripts due soon. The cyber-musical will be based on “a low-rent super-villain, the hero who keeps beating him up,” Joss said.”]
Source: https://gizmodo.com/when-will-joss-whedons-villanous-cyber-musical-strike-n-369286