Back in October, Microsoft showed off the Surface phone that we waited so long for, called the Surface Duo. At the time, it didn't tell us much; in fact, to this day, most of the specs haven't even been publicly announced. Microsoft released an emulator so we have a good idea what the software experience will be like, but almost all (if not all) of the hardware leaks have been courtesy of Windows Central's Zac Bowden.
Zac posted a round-up of all of the rumors so far, and there are some additional details in there. The dimensions are now known, coming in at 92.525x145.17x9.6mm, expanding to 185.05mm when it's open. The report also says that each side is only 4.8mm thin, meaning that both sides are the same width.
As for the rest of the specs, this was all already known. The Surface Duo will ship with a Snapdragon 855 processor, which is about a year and a half old at this point. It will also come with 6GB RAM, and storage tiers of 64GB, 128GB, and 256GB, with no expandability options. The camera will be a single 11MP f/2.0 lens, so Microsoft won't exactly be pushing any boundaries there. It will have a 3,460mAh battery, and there will be Surface Pen support.
The screens are actually public knowledge, but those will both be 5.6 inches with a 4:3 aspect ratio. The AMOLED panels will have a 1800x1350 resolution for a 401ppi pixel density, which is around what you'd expect on an FHD smartphone.
The Surface Duo is expected to begin shipping on August 24, and if that's accurate, that means that Microsoft will unveil the product and start pre-orders before then.