Dick Grayson, the first Robin and current Batman, is in fact returning to be Nightwing in the relaunch of DC comics.
"There will be a Batman and there will be a Nightwing," said DC Comics Batman group editor Mike Marts. "And Dick Grayson will be returning to his role of Nightwing."
Along with Dick Grayson, Barabara "Babs" Gordon, currently known as Oracle is also returning as Batgirl.
Nightwing #1, a new ongoing series written by Kyle Higgins with art by Eddy Barrows, finds Dick dealing with the return of Haley's Circus to Gotham City – the same big top attraction that he once performed under with his parents. In DC's official announcement, the publisher confirms that Dick's time as the Dark Knight is still relevant. It reads, "After a tenure as the Batman of Gotham, Dick Grayson resumes his mantle as Nightwing! As Dick embraces his identity, Haley's Circus, the big top where he once performed with his family, returns to Gotham – bringing with it a history of murder, mystery and superhuman evil. Nightwing must confront friends and enemies from his past as he searches for the source of an even greater evil."
Jason Todd will also be getting a title, "Red Hood and the Outlaws"
"He's proven to be such a popular character over the last several years with our DVD and also the recent limited series," Marts said of Jason Todd. "The success of those stories helped in earning him his own new title and we're lucky to have Scott Lobdell writing that storyline and Kenneth Rocafort on art, who is a great new talent that we've brought into the DC fold. Jason Todd's group will have several different exciting characters from the DC Universe – some we've seen before and some we haven't."
Also Batgirl #1