Yeah, Gotham Girl on the solicitation cover of Batman #77 has a costume evocative of Robin's waistcoat but with Steph's color; Batgirl Burnside Dr. Martens boots; and current Batgirl's mask, cape length and cape colors. I like this amalgam, and might end up rooting for Thomas Wayne.
I thought her powers were killing her. But she looks quite healthy on this cover.