Gambler wrote...
The producers of Code Geass are probably lurking in this thread, looking out for possible ideas to end the season. :D
Code Geass may end with R2, but I don't think the article states anything about OVAs being produced. If Sunrise intends to milk the popularity of Code Geass, they can easily come out with side stories for most of the characters. They may even start animating Nightmare of Nunnally.
They'll most likely come out with a movie, with some bullshit story about reviving the main character who died at the conclusion of R2(either C.C. or Lelouch). The zombie protagonist will either have to deal with some new threat or a zombie antagonist from the original who was revived through the same process as the good guy/girl. It will end with the zombie characters clashing and taking each other out, with one final scene between the zombie protag and his/her romantic interest. Bandai says, "The End" instant cashcow.