There were no significant changes between 09 and '11 (besides revised launch logic). The biggest changes in the R35 were for the US 2012-13 model years. Nissan added power (via higher boost/timing revisions and bigger turbo inlets), bigger brakes, revised the suspension geometry, stiffened the chassis, and altered the trans. ECU for both better daily driving manners and faster shifts/launches. They also officially sanctioned "launch control".
The 2012 and 2013 DBA GTRs feel like a completely different car compared to the 09-'11 CBAs.