I was wondering about this game, and there are some good news about it. It's not dead, only paused...for now.
The reason why it's still delayed is :
Aurora studio hasn't found an editor as Atari, Bandai-namco Europe, and Toei Japan owns no rights for a game adaptation of the manga.
- Professionals were impressed by the quality of SSRPG.
- Only Masami Kurumada can give an approval for such a project.
- Current development of SSRPG is paused.
- The search for the rights still goes on (they are still trying to get it done and commercialize it).
- The team want their other projects to move on and make a name for themselves.
http://forum.aurora-studio.fr/viewtopic.php?f=6&t=11