U2 will release an updated version of "Red Hill Mining Town" to support the upcoming Joshua Tree Tour 2017, according to the newest issue of MOJO magazine.

The magazine features a lengthy interview with all four band members about the tour and their memories of the time when The Joshua Tree was recorded and released. Near the end of the article is this paragraph:

"Which explains why, for a brand new mix of Red Hill Mining Town helmed by Steve Lillywhite and earmarked for an upcoming release, Bono has gone back to the master and re-recorded his vocal. 'We've also brought out the colliery brass band which was recorded at the time,' says the singer. 'You can't hear it in the original mix.'"

The article has no other details about the upcoming release -- no date is given, etc.

http://www.atu2.com/news/mojo-u2-to-release-new-version-of-red-hill-mining-town.html