The device was described by Samsung Senior Vice President Justin Denison as "the foundation of the smartphone of tomorrow".
Samsung Galaxy smartphone rumours
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It will feature an Infinity Flex Display, which was shown in a since-deleted video published to the Samsung Vietnam YouTube channel.
The screen is expected to fold inwards, with another smaller screen on the front of the device.
One intriguing detail revealed by the latest image is the inclusion of an asymmetric notch on the main screen that holds a camera and other front-facing technologies.
Images of the Samsung Galaxy Fold appeared online just hours ahead of its expected launch (MobiFlip)
The exact price for the Galaxy Fold is not yet known, though the Korea Times has previously reported that the phone is anticipated to cost around 2 million won (£1,380).
The same publication reported the inclusion of 5G technology within the device, though this would only be available in regions that support the next-generation mobile communications network.
Samsung has managed to keep details of its Galaxy Fold foldable phone largely under wraps, unlike its Galaxy S10 smartphone (MobiFlip)
Samsung is not the only phone maker to have developed a folding smartphone, with Huawei and Xiaomi among the major manufacturers to hint at similar devices.
Chinese startup Royole has already unveiled its own version of the technology with its FlexPai smartphone.
It is unclear how much consumer demand there is for folding smartphones, though Royole CEO Bill Liu claimed during the launch of the FlexPai that it will "forever change" the smartphone industry.
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