Unfortunately, the in-demand actress—who wrapped A&E's Damien this past spring and is already working in Atlanta on the sorority comedy Step Sisters with The Middle's Eden Sher and How to Get Away With Murder's Matt McGorry—is unavailable for the role as she's looking at some possible upcoming film projects.
So instead of recasting the fan favorite, the show instead plans to introduce a new Vixen who will actually be an old Vixen. Yep, thanks to Rip Hunter's affinity for time-travel, we're going to meet an earlier version of the character who may or may not share some sort of historical tie to Miss McCabe. Even cooler, E.K. will continue to voice the role of Vixen in the CW Seed animated series of the same name and the door has been left open for her to guest star on any of the Arrowverse shows should her scheduling work out.