I think this is implying the Titans might have existed in DCnU before Tims' team? The solicit mentions the original Titans (Dick, Donna, etc.) which raises a lot of questions considering the new origins. Roy Harper had a different look (not that I expect anyone to remember one panel Rocafort did.) Donna Troy has literally been created with no prior past and here she's wearing her red TT uniform while most of the characters are sporting their newest looks. But that's not Dick because this is Dick Graysons' new Robin costume.
This is Jason Todds' Robin costume.
Some of the details are missing from artist to artist but everyone should have an idea of Jasons' suit since it's in the case. He's the only Robin with a yellow cape (everyone else has black on one side), the clasps are the same, as is the belt, and the gap between the gloves and shoulders. Although his mask is a red domino while the Robin on the Titans Hunt cover has Dicks' mask. I prefer Jasons' uniform but come on, don't forget who wears what.