I'm going to say that I don't think we had Jason Todd, at least not as a Robin. It's not unprecedented to skip over him (Batman: The Animated Series went straight to Tim, even if they gave him Jason's backstory), and I think it'd be a bit too short time-wise (Time is always tricky, of course, but if we assume Dick didn't become Nightwing until he "grew up" then he's only been out of the Robin costume himself for one or two years, and I don't see that being long enough for Batman to have gained somebody new, lost him, and then gain another new one.). It could be that Jason was involved in some other capacity, but I think the "normal" story (Second Robin, killed by the Joker, back as Red Hood) is out.
Here's a new question: Have we gotten official confirmation of the civilin identities of Wonder Girl and Batgirl? It's obvious who they are (And Barbara has even already appeared in the show), but until it's actually official I'm never quite sure there won't be some twist.