Apparently Carter and Shiera Hall, Hawkman and Hawkgirl. Finally together, their curse broken, a White Lantern Boston Brand shows up under full control of his ring. The ring tells them that they must live separately, that it’s part of the plan, that the future bearer of the White Ring is all that matters. Carter says that they will not live apart again, not ever.
So be it.
And now we know what the Deadman teaser was, him standing over the ash left behind by what was once Hawkman and Hawkgirl.