From Edi Weitz's ECLM 2011 page:
This is a preliminary page to let you know early enough that we'll have another European Common Lisp Meeting in 2011. It'll be in Amsterdam on Sunday, October 23 with the usual pre-meeting dinner and probably other social activities on Saturday, October 22.
We'll update this place once we have more details, but mark this weekend in your calendars now.
Should be lots of fun, if previous meetings are any guide.