I just send the call for presentation on a number of mailing lists and will also be sending some targetted mails around.
It is online now.
Don’t hesitate to propose your topic or forward to people you think might be interested.
We are joining forces in Europe 
AppSec Eu 08 is working together with the CONFidence 2008 conference in Poland on OWASP topics. People will also get discounts when going to the other conference.
It is already known for some time, but here I want to make it even more official: the OWASP AppSec Conference is coming to Belgium in May.
More details on http://www.owasp.org/index.php/OWASP_AppSec_Europe_2008_-_Belgium
I will be announcing topics and details in the coming weeks and months.
Hope to see you all there!