It just hit 1.012.883 units, as of Jan 4, according to Media Create.
Japan should be the 3rd of 4th country were PS4 achieves this. Behind US, UK, Germany and maybe France.
Not the best start ever, but still a nice contribution to WW sales.
For comparison, PS3 sold 1.2m in the same number of weeks.
PS4 reached 1M on Dec, 17th officially in France.
Japan is therefore the 5th country to achieve it. What will be the next one to 1M? Canada? Australia? Spain ? Italy ? ;)
Prediction: End of 2015 Hardware sales (as of January 20, 2015)
Wii U: 12.1M | XBO: 19.8M | PS4: 36.0M | 3DS: 58.5M | PSV: 11.7M