PS4 release in Japan within 3 mths of Nextbox launch. Rest of world about 3 months after that. However, Sony won't allow Nextbox to have a holiday season in the west with only Wii U as the competition. So depends on Nextbox launch date as to when Sony will stage its launches.
I still don't see a Nextbox launch in 2012. So if Nextbox launches in mid-late 2013 then Sony will simultaneously launch in Japan and then in the rest of the world before Black Friday. If Nextbox launches early 2013 then Sony will stagger it's launch between Japan and the rest of the world to a greater extent.
“The fundamental cause of the trouble is that in the modern world the stupid are cocksure while the intelligent are full of doubt.” - Bertrand Russell
"When the power of love overcomes the love of power, the world will know peace."
Jimi Hendrix
