Seems that CBS highly doubted dream of a Supergirl tv show will finally become a reality. However we should ask our selves who really cares? Though relatively nothing is known about the show it seems to be feminist version of Smallvile however sources claim they may be "new interpretation" of the classic origin story. Claims have been dropped of a Supergirl/ Arrow/ Flash crossover and new details say that the show will follow a twenty four year old Zor-El.
With CW dropping the idea of any potential crossover opportunity again questions why CBS are going to fund this show.