The Adobe Photoshop Lightroom 5 was released last year in June, according to latest rumors, the new Lightroom 6 could be announced in this Summer.
Amazon Germany has already listed a book named Photoshop Lightroom 6 från början (Foto och Bild), which is set to be released on August 31, 2014.
With the price drop of Lightroom 5 and upcoming Photokina 2014 in September, Lightoom 6 could be announced in this Summer.