They're been talking about it. No news though.
What? Have you tried Paper2D? It's a piece of crap. But it's still in beta so it's understandable.
Truth is though that Unity's 2D features are already leaps and bounds ahead of Unreal. Their latest announcement was exciting, and our own Spine-Unity runtime is powerful as heck thanks to Mitch, with really nice integration with Unity's 2D features.
I think Unreal has a LOT of pros (ie, a lot of features Unity users can be jealous of) but Paper2D is not one of them.