According to the invite the Redmond company has more Lumia in store of us on September 4 at 10am eastern time. Considering the image on the invite is a selfie we will likely see a newly announced Lumia 730, which may prominently feature a 5MP front snapper.
Aside from taking gorgeous pictures of yourself, early reports surrounding the Windows Phone 8.1 handset have suggested it will be a middle range successor to the Lumia 720. The mobile device will purportedly arrive in black or white sporting a 4.7-inch HD ClearBlack display.
As for internals the Lumia 730 has been said to carry a quad-core Snapdragon chip, 1GB of memory, 8GB of storage with microSD support as well as a 6.7MP rear camera.
Middle range through and through
While most of the Lumia 730's specs might sound a step up from a mid-range handset, the smartphone will supposedly only operate on 3G bands even though there's room for a dual-SIM.
According to another rumor, though, Microsoft will also introduce a Lumia 735, which supposedly will also ride on 4G LTE wireless networks. Stay tuned to this space as we bring you all the latest announcements from Microsoft's big Lumia event in Berlin tomorrow.