Two phones from the S20 series which have been officially named Samsung Galaxy S20 and S20+ with model numbers, SM-G980F/DS and SM-G985F/DS have gotten certification for use in Thailand by the local NBTC organization.
The model numbers carry an F which is used for the international units that are not carrier-locked. The DS add-on means Dual-SIM, but not all phones come with the ability to host two cards simultaneously.
The smartphone devices are filed by Samsung Thailand, but their certification says they are manufactured in South Korea. Expectations are that the phones will come with Infinity-O displays, 120 Hz refresh rate of the screen and redesigned camera setup. Though the NBTC does not reveal any actual specs, we should see more details in the coming weeks.