Sebastian Bergmann has posted about this year's FrOSCon 2008 and the Call for Papers they've issued:

Focus of the conference is a comprehensive range of talks about current topics in Free Software and Open Source. Furthermore, space will be provided for developers of free software and open source projects to organize their own developer meetings or even their own program.

This year will be the third annual FrOSCon and will be held near Bonn, Germany. Besides the main conference, there will also be a sub-conference that has a Call for Papers of its own.