User blog comment:IiLiFa/Young Justice: Invasion 208 Satisfaction images preview/@comment-99.157.204.63-20120927210043/@comment-1038387-20120928070232

Tim was already Robin during Legacy, which is ~Jan 2015.

I don't see Dick as Nightwing until he's at least 17 (but that's purely my opinion). Then he'll be NW in December 2013. Jason won't come immediately after.

There's time, but not much.