WinRumors has received a tip that includes promotion material for T-Mobile in Germany. The poster shows that the carrier is preparing for Nokia handsets and were briefly displayed at T-Mobile’s on-site shop at the company’s corporate headquarters in Bonn, Germany.

The promotion shows the handset (possibly the revealed Sabre) with T-Mobile's Media Center and Top Apps installed. Description reads:

"With Nokia drive safely at the finish – including 3D representation and voice-controlled navigation.

New operating system: Windows phone 7.5 (Mango)

Brilliant 3.7 ” convex Amoled display"

Featuring improved GPS navigation, this news will hopefully indicate handset availability soon after announcements made at the upcoming Nokia World event.

Source: WinRumors