I love how Kon has the little "6) Tells the truth" thing in the corner. It's a minor detail, but it makes the scene sweeter.
Possible other conversations Cassie and Kon had afterward:
Kon: Hey, about you and Tim kissing... Cassie: Yes? Kon: Was he any good? Cassie: He was all right, but kind of a cold fish. Kon: Yeah, thought so. I should give him lessons. Cassie: Only if I get to watch!
Cassie: So, now seems to be a good time to mention that Tim tried to clone you (over a hundred times) and I once joined a cult dedicating to raising you from the dead. Kon: ...Say what?
So Luthor is teamed up with Brainiac again. And now that he knows Kon is alive, he's going to sue for custody, or at least visitation rights going to try to mind control him again. And--
...Wait a tick. Indigo! Shift made her alive to stop her, which also killed her. But that just means she can come back as a Black Lantern! That is, if anyone who actually cared about her was still around. In-universe, that is. Shift got re-absorbed by Metamorpho and the rest of the Outsiders are all over the place.
Back on topic: I hope we get to see Kon punching Luthor. Because someone punching Luthor doesn't happen nearly enough.