Vita is a 2011 launch for Japan.
Why not the same road map for PS4, Japan launch Dec 2012, US/Europe launch March 2013?
Didn’t the PS3 have a planned March launch before it slipped to November?
I can see Sony being comfortable with being one Quarter behind WiiU and Xbox720.
Any longer and they have the same issue they had this gen. With this strategy they get to announce things in the same time window as Microsoft, have publishers plan the same releases for 4th quarter 2013.
The release period is always supply constrained, so they don’t lose much ground in the first Christmas season in US.