CBS is yet to make a renewal decision on its freshman series, but there are conversations about one of them, Supergirl, making a jump tCBS Logoo sister network the CW. Such a move had been rumored for awhile but I hear talks are now real, going concurrently with CBS’ renewal process, which is nearing the finish line. I hear CBS has until end of day today, Wednesday, to make a decision on Supergirl, but that could conceivable get extended. It is unclear whether an agreement would be reached because it is a tall order for a show of that scale to be produced for the CW. Producing studio Warner Bros. TV already is making a pre-emptive effort to trim costs, prepping a move of production from Los Angeles to Vancouver in Season 2. That would bring the show, from producer Greg Berlani, together with his CW superhero drama series, which all are based in Vancouver.