http://u2songs.com/news/upcoming/It's taken about 8 years to get an Upcoming Releases page going again. I promise to keep it going this time.
There is some news there, Bono has written a song for Willie Nelson to sing, and Bono did backing vocals. The song is called "Where the Shadows Fall" and it will be used in the movie "Waiting for the Miracle to Come" when it is released later in 2016. The song is being used for the final credits of the movie. I spoke to people directly involved in the film in regards to the track, as the website didn't really make it clear if it was one song or multiple songs that Bono would be involved in.