Licence on 01 August 2013
Most gaming consoles seem to go through this curve - initial hype with good day 1 sales, then a slump for 6-12 months accompanied by proclamations of doom and gloom, then a gradual increase in sales, peaking around year 3-4 accompanied by proclamations of "best console ever".
I can't think of any reason why XB1 and PS4 won't follow this pattern.
