First up was Dries' keynote. It wasn't particularly inspiring, but it was a bit scary (in terms of data privacy). In a general sense it repeated some of the stuff said in the Austin keynote. Following that I took part in the "Drupal 8 CMI on Managed Workflow" session. It was great to see what's been done and I was amazed to learn one of the speakers was one of Pantheon's owners.
In my view this is one of the most important additions to Drupal. Backdrop has made a similar system available for D7 like environment, but I can't wait for D8 to be here and be able to have it as it will be shipped in D8. It's clear that whilst D8 is not quite here yet, it is definitely shaping up well.
In the afternoon I took part in a couple of sessions. Most interesting by far was "Design Systems and Drupal" - a really interesting approach in how to design in Drupal.
Overall, Day 1 and I'm really happy I got the opportunity to come here, the community is as vibrant as always and I can't wait to get to contribute on the sprints later this week.