I haven't received any announcements about this, but Jan van Wijk told me that Warpstock Europe has a location and date. Note the new website for Warpstock Europe as well: http://www.warpstock.eu/
From the web page:
"Warpstock Europe 2007
This year's European Warpstock conference will be held at the Stayokay Hotel in Valkenswaard close to Eindhoven, the Netherlands from November 2 to 4.
Information about the location, presentations, speakers, exhibitors, and registration will be provided as they become available."
From: Mark Dodel
Source: OS2VOICE.org