The rumors are now true. Supergirl is officially moving to the CW. This could mean absolutely nothing more than having to change the settings on your DVR. Unless they actually change the writing team or add some of the people from the other DC/CW shows i don't foresee any difference from what we have now. You'll either still hate it or still love it.
Personally I'm a little bit optimistic after the success of the crossover with the Flash. I'm hopping for the next season of each show to build up to some sort of crisis that unifies the dimensions and brings the Supergirl cast into the current DC televerse.
What do you think about the possibility of the house of EL joining the current roster of superfriends?