CBS still hasn't made a decision on whether or not they'll be bringing Supergirl back for a second season, but Deadline reports that talks of moving the DC Comics series to The CW are "now real." Apparently, the network has until the end of today to make a decision, but an agreement being made to send Supergirl to The CW could be complicated by the fact that it's a very expensive show.
However, with production already confirmed to move from Los Angeles to Vancouver (which is a cost cutting measure), it would certainly make sense for Supergirl to become part of The CW family. According to the trade, "It was up to CBS Corp. chairman Les Moonves, who is holding all the cards in the situation since the company controls CBS and the programming on the CW, to make the call whether Supergirl would stay or not on CBS and whether it would go to the CW. Being based on a DC property, if it moves to the CW, Supergirl would remain solely owned by WBTV and not a co-production with CBS TV Studios as the original CW series automatically become."
If Supergirl does end up moving to The CW, the biggest question is whether or not it will remain in its own separate world or if they'll somehow find a way of bringing National City into the same reality which Green Arrow, The Flash, and the Legends of Tomorrow call home. Could we be looking at the first small screen comic book reboot if that ends up being the case? Hopefully we'll hear more soon.