Future crossovers between Arrow and spinoff series, The Flash, is very likely according to CW president Mark Pedowitz.
During the Television Critics Associations 2015 winter press tour, Pedowitz stated that he sees them being an annual fourth quarter event which would be ideal for November Sweeps.
The two night crossover event in 2014 earned Arrow its highest rated episode to date and The Flash's second highest episode following its series premiere.
Here’s what executive-produced Greg Berlanti had to say on the subject of Kara Zor-El teaming with Oliver Queen and Barry Allen:
“So much has to go right for us to be able to make a great show. Again, I think of myself as like if I were watching them, I would want to see that. But we have to get so many things right to make a good show and so much of it is luck, unfortunately.”
It sounds like Berlanti isn’t immediately discounting the possibility, he also doesn't want to make any promises this early in Supergirl’s development. He certainly seems to want it, though, which is a positive sign.
In other news, fans of Brandon Routh’s character shouldn’t lose hope however, as Guggenheim said that he and his fellow producers are starting to consider the possibility. With Routh bringing so much energy to the Ray Palmer character, he revealed, the show’s creator are now interested to see where a show could go.
Here's what Greg Berlanti had to say:
“Ray really brings that and brings that energy and he’s so much fun to write. He’s a joy to write," he said. "Brandon’s so terrific and embodies the role so well that when we talk about how to further expand things, he’s a natural person to talk about."
And when directly asked just how “preliminary” Guggenheim’s discussions on The Atom have been, he said that “We’ve talked in the most preliminary of ways about doing something with Brandon beyond Arrow.”
At this point, it seems unlikely that Routh would get his own show in time for the fall 2015 season. That shouldn’t come as a death sentence, however. As Guggenheim notes, Routh wasn’t introduced to Arrow with the explicit purpose of spawning a spinoff, like Barry Allen was last year. Ray’s progression into a leading man is more natural one, and will require more time.
Both Arrow and The Flash return from winter hiatus later this month.