The show is scheduled to air January or February of 2016 and is expected to cross-over with ARROW and THE FLASH as previously speculated.
The spinoff stars Brandon Routh as Ray Palmer/Atom, Wentworth Miller as Leonard Snart/Captain Cold, and Dominic Purcell as Mick Rory/Heat Wave, Ciara Renee as Kendra/Hawkgirl, Victor Garber as Professor Martin Stein, Arthur Darvill as Rip Hunter and Caity Lotz as White Canary (read more from EW).
"When heroes alone are not enough ... the world needs legends. Having seen the future, one he will desperately try to prevent from happening, time-traveling rogue Rip Hunter is tasked with assembling a disparate group of both heroes and villains to confront an unstoppable threat — one in which not only is the planet at stake, but all of time itself. Can this ragtag team defeat an immortal threat unlike anything they have ever known?"