Maybe it is little bit late for this announcement. (I just notice this conference now.) But the “Virtual Worlds Best Practices in Education 2009 Second Life Conference” will be held in Second Life, from this Friday (March 27-March 29).
The conference schedule is at: http://wiki.vwbpe.org/index.php?title=Schedule
If you are interested in, you may have a look at http://www.vwbpe.org/