No, I just know that they said Slade is going to be a huge part moving forward, as well as other characters. The actor for Slade is a Series regular now cast-wise, so I'm sure you'll see a lot of him. ^_^ I'm not sure about Shado though. I'm sure the flashbacks will continue to develop Slade + Shado. I have no doubt they'll both likely make their way into the present-day storyline. And I know characters such as The Flash are scheduled to appear this season. I'm sure we will get other notable DC Characters as well.