http://www.nvision2008.com/Enthusiasts/nvscene.cfm
In addition to the classic demo and 4k intro competitions, there will be a very strong lineup of seminar speakers, featuring Navis/ASD, Bonzaj/Plastic, Chaos/Farbrausch, IQ/RGBA, Mentor/TBC, Preacher/Traction and Pixtur/Still.
Not a pure demopary but definatly looks like a really fun event.