So far on the Wiki attendee list there's 48 registered developers that will be at the event in Germany.
The Wiki program for the three day event is also filling up, including talks about maininling XWayland (for X.Org Server 1.14), hardware-independent graphics drivers, an integration suite, and Waffle.
Prior to the start of XDC2012 on Wednesday is also going to be a gathering to write a book on graphics driver development.
celebrating 25 years of X11, five years of the modern Catalyst Linux driver, and five years of AMD's open-source driver strategy, Phoronix is sponsoring (good quality) beer during the event. This follows in the beer tradition set last year during XDC2011 Chicago. The beer coasters are being provided by the Phoronix Test Suite (originally there was going to be X.Org coasters, but the X.Org logo is bad and also doesn't work well for printing monochrome when with the ring).
tweeting of the Nürnberg beer shenanigans.
Immediately following XDC2012 is then an X.Org beer hike on Saturday in Franconia followed by Oktoberfest in Munich. More XDC2012 details are available from the X.Org Wiki. One week to go!