https://wccftech.com/gdc-2020-officially-postponed-for-the-coronavirus-organizers-now-looking-for-a-summer-date/

GDC 2020 has been officially postponed by the organizers, who posted the following message as an explanation.

After close consultation with our partners in the game development industry and community around the world, we’ve made the difficult decision to postpone the Game Developers Conference this March.