2020

Roll20Con 2020 is October 23-25^source.

roll20.net/con will likely have more info later.

Past Cons

From wikipedia:

"Roll20 has held an online gaming convention named Roll20CON every year since 2016, consisting of an organized series of online games hosted on Roll20 and streamed on Twitch, along with other events. Roll20 has partnered with charitable organizations to run Roll20CON: The Cybersmile Foundation, an organization providing support for victims of cyberbullying, in 2016; and Take This, an organization focused on mental health in the gaming community, in 2019."

2019

Roll20Con 2019 was October 5-6.