Samsung is introducing a trio of Galaxy S flagships, and their S20 moniker was all but confirmed at this stage it's always nice to get official backing. Today two of the phones with code names SM-G980F/DS and SM-G985F/DS have been certified for use in Thailand by the local NBTC organization with the names Galaxy S20 and Galaxy S20+. Samsung Galaxy S20 and Samsung Galaxy S20+ certifications The model numbers are in line with previous flagships, and the letter F in the end usually is used for the international units that are not carrier-locked. The DS add-on means Dual-SIM, but...
Source: https://www.gsmarena.com/samsung_galaxy_s20_galaxy_s20_monikers_confirmed_in_certification-news-41189.php