Supergirl in Arrow-Flash crossover?

Ever since Marvel’s Agents of S.H.I.E.L.D. debuted on ABC, shared superhero universes were no longer limited to the printed page or the big screen – creating an opportunity for high profile team ups on network TV. To that end, The CW used the established platform of Arrow to launch their critically acclaimed exploration of speedster Barry Allen (Grant Gustin) long before The Flash TV series actually premiered.

Since that time, viewers have been treated to other intriguing shared universe events: both Oliver Queen (Stephen Amell) as well as Felicity Smoak Emily Bett Rickards) have cameoed on The Flash and a full-onArrow/Flash crossover storyline is set to premiere in just one week (from the time of this writing).

However, with the announcement that CBS has picked-up a Supergirl TV series from Arrow and Flash producer Greg Berlanti, fans are already speculating whether or not we’ll get to see Kara Zor-El team-up with Oliver and Barry in a shared universe event spanning all three series.

Now, only two short months after the Supergirl TV show was officially announced, Berlanti is finally weighing-in on the debate – suggesting that it is possible that fans will get to see the CBS Supergirl fighting alongside CW’s Green Arrow and The Flash.