2018 will be an iterative year for the Korean company's flagships, so you shouldn't expect a new revolutionary design. Also, both the devices are finally expected to ditch the 3.5mm headphone jack as of now.
The S9/S9+, known internally at Samsung as Star 1 & Star 2 - will be launched as the SM-G960 and SM-G965. It bigger sibling will also feature a dual-camera setup at the back, similar to the Galaxy Note 8.
It's unclear how much Samsung will reveal at the trade show, but from what Blass reports, the company would still be holding its traditional Galaxy Unpacked event in March, to officially launch the smartphones.
Rumours surrounding when we'll see the Galaxy S9 announced fluctuate between January and just prior to Mobile World Congress.
Samsung, unlike a year ago when it endured embarrassing Galaxy Note7 fiasco, had a remarkable time in 2017 with both of its flagship phones - Galaxy S8 and Note8 series - receiving overwhelming response across the world. The rear elements will be placed vertically with fingerprint sensor on the bottom of the placement.
The Qualcomm Snapdragon 845 is being hinted at, while global markets could get an equivalent Exynos processor. It will have two variants with 4GB and 6GB of RAM. Since the entire front panel of the handset is not visible in the new photos, it can not be confirmed whether it features dual front-facing cameras.
Elsewhere, Samsung is also said to be re-working on the iris scanning functionality of its Galaxy S line-up, with regards to software, to hopefully make it better, faster and more secure than Apple's Face ID. Samsung's apparently made a decision to retain the 3.5mm headphone jack as well. In addition to the AKG stereo speakers support, the smartphones may be backwards compatible with DeX docking station. This device will lay the phones flat, letting you use them as a touchpad or keyboard.