About two hours ago the Lindens posted: Town Hall Event with Linden Lab CEO Ebbe Altberg – Sept 13.

Linden Lab CEO Ebbe Altberg will be appearing at a “Town Hall” chat session
Thursday, September 13th 2018 at 9:30 a.m. (SLT/Pacific)

There will be a Q&A and you can post questions for consideration in that part of the meeting here: “September 2018 – A Conversation with Linden Lab CEO Ebbe Altberg.”

The live in-world location has not yet been decided on. Closer to the event they will make a location announcement.