Man of Steel writer David S. Goyer is working with Syfy to tell the story of Superman’s grandfather – Jor-El’s father (a character that has not been prominently featured before). While Krypton has yet to be ordered to series, it is only in the early stages of pilot development, Goyer released the following synopsis of what to expect:
Years before the Superman legend we know, the House of El was shamed and ostracized. This series follows The Man of Steel’s grandfather as he brings hope and equality to Krypton, turning a planet in disarray into one worthy of giving birth to the greatest Super Hero ever known.
The series is only in the concept stage at the moment but more info as it develops