From the web-site:
"Visual Studio Live! Austin 2020 Postponed Due to Growing Concerns Over COVID-19 Virus
Due to the escalation of the Coronavirus (COVID-19) pandemic, we have made the difficult decision to postpone the upcoming Visual Studio Live! Austin conference scheduled for March 30 – April 3, 2020 to May 10 - 14, 2021. We believe this decision is in the best interest of our attendees, speakers, sponsors, and staff for continued health and safety.
Coronavirus (COVID-19) Attendee Information"