From Apple:

The WWDC 2020 program will provide Apple’s entire global developer community — which now includes more than 23 million registered developers in more than 155 countries and regions — and the next generation of app developers with the insights and tools needed to turn their ideas into a reality. Additional program information will be shared between now and June by email, in the Apple Developer app and on the Apple Developer website.

Apple also announced it will commit $1 million to local San Jose organizations to offset associated revenue loss as a result of WWDC 2020’s new online format.

I feel like one of the interesting side effects of all of these cancellations, re-scheduling and re-thinking of conferences will prove to us the largest value is the social aspect of them. That may make it more difficult to justify the flight, hotel and conference costs in the future for a lot of employers. And that might be fine.