Daniel Weinreb has announced some preliminary details for ILC 2009:
The conference is in the very earliest stages of planning. I will be the General Chair, and Guy L. Steele Jr. will be the Program Chair. It will be in Cambridge, Mass, USA, almost certainly at MIT. Most likely, it will occur during the academic spring break, with the intention that we can make housing available in the MIT dorms. This would be sometime near the end of March, 2009.
Read the full ILC 2009 message here.