Remember when Apple created a “Machine Learning journal”? Well, it seems like they’ve stopped publishing to it and now have gone back to introducing stuff at presentations, if at all: https://machinelearning.apple.com/
The only exception I'm aware of is HOPL (History of Programming Languages). They still published the papers/proceedings as usual, but have postponed a physical gathering instead of meeting virtually because the conference convenes only once every 10-15 years.