The Windows 10 Mobile over-the-air (OTA) update was expected to be available in December 2015, but fresh information has revealed that it will be available by early 2016. Microsoft is still mum on exact release date, but the rumor mill is suggesting that it will be made available as early as Jan. 12.

According to Nokia Power User, an unnamed tipster has revealed to it that the Redmond giant is currently working on a high-end midrange smartphone, the Microsoft Lumia 850. The company is now rumored to announce the Lumia 850 on Jan. 12. This launch event will also mark the announcement of the Windows 10 Mobile OS roll out for first set of eligible devices that are currently running on Windows Phone 8.1.

Previous rumors have suggested that the Microsoft Lumia 850 will be a phablet device. The handset is codenamed as Honjo and it is expected to come out to succeed the Nokia Lumia 830 that was released in September 2014.

Microsoft Lumia 850 rear Here is the rear view of the alleged Lumia 850 Photo:

Like the Lumia 950 XL, it will be coming with a huge display of 5.7 inches. It will carry support for full HD resolution of 1920 x 1080 pixels. The Lumia 850 will be powered by Snapdragon 617 chipset, but there is no information available on the amount of RAM it will feature.

Microsoft Lumia 850 front Here is the front view of the alleged Lumia 850. Photo:

One of the leaked photos has suggested that the Lumia 850’s protruding camera will feature new enhancements to the 2014’s model. Moreover, the leaked image has also revealed that the smartphone will feature a frontal flash for its selfie shooter. Other rumors suggest that the flash like feature on the front bezel is an iris scanner for the Windows Hello feature.

It will be sporting a metallic frame around its chassis. With a speculated thickness of 6.9 mm, the Lumia 850 is poised to launch as the thinnest Lumia smartphone ever.