The first promo video for the upcoming season of Vixen has recently been posted on the official CW Seed Facebook page. The second season will premiere exclusively on CW Seed website later this Fall.
https://www.facebook.com/CWSeed/videos/937909716320041/?autoplay_reason=gatekeeper&video_container_type=0&video_creator_product_type=2&app_id=2392950137
Source: CW Seed Facebook