Updated September 30th, 2020.
Apple’s 2020 World Wide Developers Conference begins June 22nd, 2020 with a Special Event Keynote at 10 AM Pacific time. You can watch the keynote by going to apple.com at the appropriate time (or by going there later, as Apple generally records such talks and posts them for people to view at their convenience).
You can also watch the keynote using your Apple TV.
Apple hasn’t had a special event in months and rumors are flying regarding what they will reveal in the keynote. I would advise delaying any Apple hardware purchases until after June 22nd. You just never know.
Knowing Apple and their commitment to equality, fair treatment, and social justice I am expecting the keynote to include a stirring tribute, and the announcement of anti-racism initiatives, in response to the killing of George Floyd.