Samsung is rumored to be preparing multiple varieties of its upcoming S10 series, one of which will be 5G-enabled. The well-regarded leakster Roland Quandt believes that, if this SKU is to exist, it will come with the new Exynos 9820 chipset only, to go with its Samsung 5G-NR modem.
https://www.notebookcheck.net/The-5G-Samsung-Galaxy-S10-may-not-have-Snapdragon-variants.361731.0.html