I suspect nobody knows, as I didn't find any relevant google hits. (I do see HBO has some Cartoon network stuff, and SOME DC stuff.. but some DC stuff is on DC's own streaming service)
On my usual "check what's expiring", I saw Justice League Action is expiring in 13 days. So I started watching it. Heck, it's basically a kiddie cartoon, after watching 2 eps..
but I'm still curious where it's going. I have _most_ of the (sole) season's episodes recorded on my Tivo but in SD.. So even if I don't watch them before they expire, I can see most of them if I watch them before my hard drive dies.. heh...
But if they're going to HBO, then that's less reason to watch now since I already have HBO.