For polish speaking (mainly) event - BIM 2009 conference:
http://www.archicad.pl/
http://www.archicad.pl/documents/bim2009.html
http://www.archiclub.pl/phpbb3/viewtopic.php?f=2&t=2540
Two presentations will be in english:
Viktor Várkonyi Graphisoft CEO and Brigitta Antal from Abvent
MacBook Pro Retina 2019/2.4 GHz/Intel Core i9/32GB RAM/Radeon Pro 5500M 4GB/macOS 11.6/ArchiCAD 25vINT+POL/Maxwell Render 5.2/Twinmotion 2022.1