Because the back quarter of 2015 and first part of 2016 shaped up to be about as quiet as it ever gets in the Metallica universe these crazy days... it seemed like the best time while there was pretty significant downtime from touring, i.e. presale tickets and meet and greets. This is a change we have been thinking about for quite some time and the opportunity presented itself while the band was in the studio finishing the Hardwired...To Self-Destruct.