from DF's site:
"...This is not an official announcement, just a quick few words)
Christian Wirtl: drummer of young Swedish power metal band 'Soul Source' (one of the 5 finalists of the Young Metal Gods Competition in Europe) will be standing-in on the drums for DragonForce at the Sweden Rock Festival. Long time sticksman Didier Almouzni have officially left the band.
From today, Christian only have 2 days to learn all the songs, and the first time he will play with DragonForce will be on stage at Sweden Rock! Due to the extreme short notice any rehearsals are not possible, but trust us, he is easily fast and good enough! We would like thank him for helping us out by taking this daunting task in such short notice..."