the_dengle on 23 June 2014
Aonuma confirmed that Hyrule Warriors is "canon." He did use that word. But he clarified that it takes place I a a sort of alternate universe from the rest of the series, like how Majora's Mask is canon despite most of the characters not actually being the people of Hyrule.
If I had to guess, I bet one or two characters (Ganondorf probably) will be visitors from the main timeline.
