The updated Exynos chipset is likely to use the new 10nm FinFET manufacturing process, the same one used by its Qualcomm equivalent, the Snapdragon 835. This suggests that we may see a number of Samsung Galaxy S8 variants with different processors.
http://www.notebookcheck.net/Samsung-s-upcoming-Exynos-9-Series-SoC-to-compete-with-Qualcomm-s-Snapdragon-835.198088.0.html