Several other voice actors have been confirmed to be a part of Batman: Gotham Knight. A story over on World's Finest Online states that Gary Dourdon, David McCallum, Parminder Nagra, and Ana Ortiz will be joining Kevin Conroy in providing voices for the feature.
Information on the roles they will be playing, as well as more information about Conroy's involvement, are expected to be revealed soon. Conroy provided the voice for Batman in the Batman animated series and on Justice League.
Batman: Gotham Knight will be released on DVD and Blu-Ray Disc on July 8, 2008.