They look different to me and I have both in my garage. Different light assemblies and different fender, ALTHOUGH they may be interchangeable. Meaning you could put the 2010 light and fender on a 2011 but I don't see the support bracket on the 2011. I don't think a 2010 fender will match up with the 2011 light.
the plastics will fit, and yes the fender and light are the only differences, but still fit (dont think you can have a 10 fender with 11 light unit or vise-versa without it looking bad)