According to this site: http://www.my-artist.net/deadbysunrise/termine DBS will take part in Stock Car Crash Challenge in Gelsenkirchen, Germany on 10.10.09.
I'm not sure whether it's true or not, but that's the official German webpage, so I guess there must be some truth in it... but they are not on the event webpage yet! This will likely be a one song performance.
Edit: performance confirmed. Here's a screencap from TvTotal that shows the banner event in the background, thanks graveguard!
Tickets for the event are on sale here!