We are only searching for more people that want to present a quickie. A quickie is a presentation of 5 minutes sharp. You could use it for example to show some cool stuff. So if you are around in June, and you made something new, or saw a nice new feature somewhere, feel free to e-mail us at danny at rubyenrails dot nl.
Update 2007-04-23: Unfortunately Simon Willison canceled. He felt too much out of place on a Ruby and Rails conference.