Gary Berman from Creation Entertainment made a post on the CW Boards announcing that Katherine Boecher will be added to their Salute to Supernatural convention in Vancouver, Canada which takes place August 27-29, 2010:
Hi, All:
We've just added Katherine Boecher (Lilith) to the convention with more to come. Our goal is to have more guests than last year (which in fact is always our goal!)
Keep an eye out for more announcements, I will try to alert here first if I can. Katherine isn't even on our site yet but I wanted to give the heads up here.
Thanks,
Gary