All players in Microsoft's Surface Line are doing very well. Due to its success, Microsoft has been rumored to expand the line to smartphones. This has been going around for quite some time and now, there is almost definitive proof that it will be released by next year.

As Vine Report explains, a quick photo was snapped of Microsoft's Building 88 in Redmond, Washington. This photo was shared on Twitter by Shubhan Chemburkar, an Indian app developer. The photo was a display from Microsoft, showcasing all the current Surface devices.

However, there were four slots that were unfilled. Instead, labels were placed with dates on them. One read "2016" and another three read "2017."

Christian Today notes that these devices will be the Surface Pro 5, the Surface All-In-One Computer, the Surface Book 2 and the Surface Phone. The Surface Phone is expected to arrive in 2017 and will be part of Microsoft's higher-end devices. The target public will be business owners and thriving entrepreneurs.

Moreover, the Surface Phone is expected to come in three variants. The entry level option is expected to be powered by the to-be-released Qualcomm Snapdragon 821 processor. This will mean that the standard phone will already be faster and more powerful than handsets currently on the market. It will also run on 4 GB of RAM.

The midrange handset, on the other hand, will run on 6 GB of RAM. Meanwhile, the best of the Surface Phone line will have 8 GB of RAM and 512 GB of internal storage.

Naturally, the devices will have similar aspects, such as an AMOLED display. The standard variant is expected to come in a 5.5-inch screen, but it may be larger for the other phone variants. All three Surface Phones will also have expandable internal memory via a microSD slot. They are also expected to have a whopping 20-megapixel rear camera. The most exciting feature, however, may be the inclusion of a Surface Pen.