How to get 2020/2021 summit presentation PDFs?

1

Hi guys

I have checked 2019 summit web, concludes presentation PDF + Youtube video, such as PX4 Developer Summit Zurich 2019 - PX4 Autopilot

Is there any link avaliable, which concludes presentation PDF + Youtube vide in 2020/2021.

2

Just Youtube videos, no PDFs ?