Originally posted by cesar_garza01:"It's nearly completed." Bono mentioned U2's next album during this humanitarian interview he's doing with @skollfoundation.
— atu2 (@atu2) April 5, 2017
Mmm, he said it was almost finished during the SOI release, isn't it?
EDIT: I found the exact quote on Sept 2014:
[..]
Time flies.
DOESN'T IT, BONO?!
This guy said that he certainly prefers to have a rigid schedule and even time constraints so the songs are written, recorded and released in a short time span and that helps keeping them alive, fresh and powerful. U2 have usually been more like the opposite, of course (except for Pop, Zooropa and maybe R&H), but it's getting worse and worse.