Well the end of the DC Premiere line of animation is coming, but we already know that a new line of animation is in the works featuring the New 52. It's a smart move for DC and the WB because rather than focusing on past story lines that are no longer apart of the comic line, they can stay relevant with their animation. Here's what the clip is about:

Today's clip finds Barry Allen (Flash) explaining the "Speed Force" to Batman (Thomas Wayne, in Flashpoint's fractured timeline). Flash and Batman are voiced by Grey's Anatomy stars Justin Chambers and Kevin McKidd, respectively.

http://www.youtube.com/watch?v=1CVCNja-ljY&feature=youtu.be