Garber, who plays one half of Firestorm as Dr. Stein, let the details fly in an interview with BroadwayWorld.com.
Yeah, I think it's going to be a very fun ride. I really honestly can't tell you much about it except it is completely new and it will involve a lot of interesting people. No. We haven't filmed any of it yet - but, it is going straight to series. We start filming in August and it will be on in January. Yes, it will be on the CW.
In addition to Garber, the spinoff is set to star Brandon Routh as Atom, Wentworth Miller as Captain Cold, Dominic Cooper as Heat Wave, Ciara Renee as Hawkgirl, Arthur Darvill as Rip Hunter, with Caity Lotz and Frank Drameh in to-be-announced roles.
Garber offered the following about his fellow cast members.
Yes, it's so many interesting people involved with it - Ciara and Arthur Darvill and Wentworth Millerand Dominic Purcell and Brandon Routh and Caity Loz. I am very much looking forward to working with all of them on it. They are all really great people.
The inklings of "The Legends Of Tomorrow" have already started with the last episode of The Flash. The newspaper clip from the future mentioned Hawkgirl, and this spoiler pic has landed online.
Update: It's also reported a 3-minute teaser will be released May 14th at the CW's Upfronts presentation.