You know, it is possible that DICK is actually the one wearing the Red Robin costume. I can't imagine why - he's perfectly happy as Nightwing, to the best of my knowledge - but although the costume has been associated with Jason recently, that's NOT where its origins are. The first appearance of the costume was in 'Kingdom Come', and the person wearing it was a future Dick, the inference being that he was kinda-sorta assuming his mentor's identity with a twist of his own, given that KC Bruce had resorted to hiding out in the Batcave and fighting crime with robots by that point. So what MIGHT be the case here is this: DC has decided to have Dick start wearing the costume, in order to associate him more strongly with his future self. It makes sense - they've been doing a lot of KC-related stuff recently, and this may be another example of it.