I never saw this coming, but Yu Yu Hakusho is coming back with some new OVAs this fall according to our source. They will be attached to the 25th anniversary Blu-ray for the anime and will show some features that the original anime never got to show.
The first special will be called Two Shots and will feature Kurama and Hiei. The other will be called All or Nothing, which is the second-to-last chapter of the manga. On October 26th the Blu-ray will be available to purchase. I might need to pick up the Blu-ray set for the culture!