DM235 on 03 September 2013
According to Wikipedia:
The Xbox 360 was released on November 22, 2005, in the United States and Canada;[5] December 2, 2005, in Europe and December 10, 2005, in Japan. The Xbox 360 began production only 69 days before launch,[34][35]...By year's end, Microsoft had shipped 1.5 million units, including 900,000 in North America, 500,000 in Europe, and 100,000 in Japan.
70 days from now is November 11, so an early November launch for the XBox One looks likely if they have the same production run.
Given technological advances, I would assume that this time around Microsoft would be able to ship more than 1.5 million consoles by the end of the year.
