The K12 Online Conference 2008 has just issued a call for proposals. This year’s conference is scheduled for October 20-24 and October 27-31 of 2008, and will include a pre-conference keynote during the week of October 13. The conference theme for 2008 is "Amplifying Possibilities."
Participation in the conference (as in the past) is entirely free. Conference materials are published in English and available for worldwide distribution and use under a Creative Commons license. The deadline for proposal submission has been extended to July 11, 2008.
You can get more information, including the proposal form, over on the K12 Online website.