While it was pretty much to be expected by now, it was never officially announced before today. The Xbox One is going to be released in Japan in 2014, as Head of Microsoft Studios Phil Spencer confirmed as part of an interview on Famitsu.com:
The release in Japan will happen in 2014. The announcement of a firm release date and price won’t happen at Tokyo Game Show 2013. We’ll announce that some time in the future. At the moment I cannot answer on when exactly in 2014 it will happen.
The Xbox One itself, Kinect, the entertainment services and the games are almost finalized, but we thought that when launching on an important market like Japan, it’s necessary to launch in “perfect shape”, including localization and local partnerships. Due to the time necessary for that, we decided to miss the November the 22nd launch date.
Japanese gamers that were eagerly waiting for a release date to be announced at Tokyo Game Show will need to find something else to wait for. I guess they can feel relieved, at least the console won’t launch in 2015. It’s always better to see the glass half full, isn’t it?