This is not a confirmed album. On April 24th, 2016, a mysterious buy link arose on Amazon.com for an unannounced album entitled "Impusle". There is both a cd and a vinyl format and the release date is confirmed to be May 27th. The project will be released under the BRUTAL PANDA label.
The buy link can be seen here:http://www.amazon.com/Impulse-Bj%C3%B6rk/dp/B01E5JZKI8.
The album is categorized under a special promotion/pre-order so there's more reason to believe its an upcoming project. For now, nothing has been confirmed, but Anthony Fantano of theneedledrop tweeted of the possibility of its existence.
My heart was so full with the thought of a new Björk album so soon, however, if you go to the Brutal Panda website, the very first thing is promo for the new Boyfrndz album ‘Impulse’ out on May 27th.