There is some subtle changes I've found between 2010 and 2011, none relating to performance though.
Really odd change is the radiator mounts. I found this when fitting up my Radguard. Apparently the 2010 model has bolts on both sides of the top of the radiator. The 2011 model has a bolt on one side and a tapered knob like thing attached with a rubber grommet on the other side.
Doesn't seem like much, but it would mean a change in the frame casting on the right hand side of the bike, given this tapered knob is part of the frame. As to if they changed anything else on the frame, wouldn't have a clue.
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