During the SEGAFES livestream today, SEGA Of Japan revealed their partnership from with the international Olympic committee and announced multiple projects.
The first is a realistic sports sim titled Tokyo 2020 Olympic The Official Video Game that includes all the major Olympic Sports from the main track & field events to tennis and football. The game will be available on PS4 and Nintendo Switch during Summer 2019.
in addition, SEGA also announced the forth Mario & Sonic game titled Mario & Sonic At Tokyo Olympics. The game will release Worldwide for winter 2019 exclusively on Nintendo switch. An arcade version is also planned for 2020 in Japan.
SEGA have also planned to release Sonic at the Olympics Games for iOS and Android. You can check out the announce trailer below