OrbOrigin project is not dead. He released part 6 last month.
icstor has random release cycle, like it could be a year, but when he drops release, it usually a huge update content wise.
The problem though, long or unpredictable game updates burns out the interest to the game. There is so many releases taking place meantime, which drags interest of players, who forget story details. So even when new update is released even the most loyal players would likely scroll trough entire update only stopping by for dialogs of their favorite characters.