Hey henrikfalk! The talk has happened already, yes. You can find the recordings of the live session on the Obsidian Community Talks YouTube channel, and here are the links to the Dataview recording, specifically:
And the slides can be found in this public Google Drive folder.
The talks are announced on the Obsidian Discord Server. You can go to the #Announcements channel and react to this post (image attached) to get the @Community Talks role and be notified of any talks in future 
