German spy photographers have caught the new BMW E90 M3 while undergoing testing on the Nurburgring. The capture of an M3 sedan in the wild is significant, as this confirms the first appearance of the 4-door M3 since the E36. GermanCarFans also notes that the hood of the M3 has been modified to make room for what is most likely a 400-hp V8. Unfortunately it's unclear what the M3 will look like as stock 3-series bumpers and fascia were used for this tester. The article does have some nice artist's renderings of the mug this car will most likely be wearing when it debuts early next year.