Greg Sullivan, head of PR-division Microsoft, announced on his Twitter-account that the company has already started to produce updated Lumia Cyan for some smartphones that are running the version of the operating system Windows Phone developers. Update still was not available for these devices because of problems with the technology Bitlocker, resulting in smartphones turned into the "brick."
Currently update got Nokia Lumia Lumia 1020 and 1520 from AT & T and the Lumia 920 from T-Mobile in Germany. Soon Lumia Cyan should get the rest of the people around the world.