Portico, the first Windows Phone 8 update was rolled out a few weeks ago to Nokia Lumia 920 units in the United States and Canada.
The Finnish company announced the rest of the world will receive the Portico update beginning February 2, though we're not sure if it will be launched at the same time in all regions.
However, it appears that Nokia has already decided to ship all Lumia 920 units with Windows Phone 8 out of the box.
Windows Phone 8 Portico adds lots of stability fixes and camera improvements, as well as performance enhancements. Stay tuned for more updates on the matter.
Source
