I don't know how you describe faster focusing but I know my camera got better in low light focus acquisition. In fact it is on the par now with canon 5D III so those who ran reviews between these two cameras and stated that 5D III is better should shut up now. In fact even most left and right AF points got faster and more precise too. No more OOF shots in low light. Other than that I don't see anything gotten better. My problem of slow writing with CF and SD cards in place is still there.