Sony has launched a limited edition series of the Xperia Z3 devices, including the Z3, Z3 Compact, Z3 Tablet Compact. The devices feature an exclusive etched pattern on the glass back. Three designers were chosen for the job, who each chose a city of their choice to etch on the back of these devices as part of the Stadt Talente peoject. Vesa Tapani Sammalisto chose Berlin to etch on the back of the Z3, Shinpei Hasegawa chose Tokyo for the back of the Z3 Compact, and Jan Feliks Kallwejt chose Warsaw for the Z3 Tablet Compact. The devices are available as limited edition, with 33 being made of each and sold only in Germany. Source (German) ...
Source: http://www.gsmarena.com/sony_creates_limited_edition_xperia_z3_series_for_germany-news-10626.php